fossil bryozoans are known to science. 2/7. The early Cambrian bryozoan Protomelission gatehousei from the Flinders Ranges, South Australia. Image a shows a scanning electron microscope image of 21 Oct 2016 ... Fossil Friday #10 – Bryozoans! Bryozoans are the coolest little animals you've never heard ...Abstract. Bryozoans are a group of invertebrates with a history dating from Early Ordovician time, soon after wellskeletonized invertebrates first appeared. Many living representatives of the tubular Bryozoa, or Stenolaemata, retain some characteristics of their early Paleozoic ancestors, generally as orderlevel characters (Boardman 1981).Paper describes six species of neocheilostomine bryozoans occurring in the Middle Eocene-Early Miocene rocks of Western Kachchh, Gujarat, India. Taxa belong to the families Quadricellariidae Gordon, 1984, Vinculariidae Busk, 1852 and Poricellariidae, Harmer, 1926. Of these three species are new. These are Vincularia feddeni nov sp. Poricellaria …Oct 27, 2021 · The oldest fossils previously confirmed to be bryozoans are from the earliest part of the Ordovician, during the time interval called the Tremadocian stage (485.4 million to 477.7 million years ... Bryozoa are a phylum of coelomate metazoans (animals with a gut in a central fluid-filled cavity), which are part of a group called Lophotrochozoa. …RM H3YT5F–Sample of a Bryozoa fossil, also known as the Polyzoa, Ectoprocta or commonly as moss animals, are a phylum of aquatic invertebrate animals.In older fossil reefs, branching and lattice bryozoans inhibited movement of loose sediments around reefs, functioning as sediment baffles,, trappers, binders, or stabilizers. In other reef structures, dead coral bioherms’ surfaces were covered by a solid veneer of encrusting bryozoans. In still others, originally more extensive bryozoan ...Fossils of about 15,000 bryozoan species have been found. Bryozoans are among the three dominant groups of Paleozoic fossils. Bryozoans with calcitic skeletons were a major source of the carbonate minerals that make up limestones, and their fossils are incredibly common in marine sediments worldwide from the Ordovician onward. Fossils of about 15,000 bryozoan species have been found. Bryozoans are among the three dominant groups of Paleozoic fossils. Bryozoans with calcitic skeletons were a major source of the carbonate minerals that make up limestones, and their fossils are incredibly common in marine sediments worldwide from the … See moreNew fossils of Protomelission from the Xiaoshiba biota, showing attachment of the alga to a brachiopod shell. Bryozoans Credit: Zhang Xiguang. Ruth Schuster. Mar 8, 2023. ... “If bryozoans – and perhaps some less fossilizable phyla – arose later, then the trajectory of life was not set in stone in the early Cambrian.” ...identified as fossil bryozoans, most recently Pywackia from the Cambrian (Landing et al. 2010; but see Taylor et al. 2013). The founding zooid of a colony, the ancestrula, is morphologically distinct from the later budded zooids, being typically smaller and less complex. Zooids of fossil bryozoans seldom exceed 1 mm in maximum surfaceNov 9, 2022 · However, the earliest occurrence of bryozoan fossils (Protomelission gatehousei from Australia and South China) and (the Age 4 Cambrian Harkless bryomorph fossil from western United States) are dated to the early Cambrian, which is younger than the age observed from our molecular clock analysis and also falls outside the range of the 95% CI ... iStock Bryozoans Sea Fan Fossil Stock Photo - Download Image Now - Bryozoa, Fossil, Ancient Download this Bryozoans Sea Fan Fossil photo now. And search more of iStock's library of royalty-free stock images that features Bryozoa photos available for quick and easy download. Product #: gm579122962 $12.00 iStock In stockBryozoans. An Illustration by Mary Williams of fenestral bryozoans with lophophores out. Based on Fossil in the Silurian reef fossils of the Chicago area in the Field Museum. Illustrated during the Summer of 2014. BRYOZOANS are colonial animals that live in both freshwater and seawater. A colony is composed of hundreds of very tiny individuals ...This review of Gondwanan Cretaceous bryozoans aims to summarise what little is known and pose questions for the future. Only low-diversity bryozoan faunas have ...... fossil and Recent assemblages. These findings suggest yet again that species ... bryozoans. Furthermore, if the extrinsic controls on bryozoan morphology can ...Bryozoans are some of the most abundant fossils in the world. They are also widespread today, both in marine and freshwater environments, living at all latitudes and at depths ranging downward to at least 27,900 feet (8,500 meters). Marine bryozoans show up in the fossil record in the early part of the Ordovician Period, about 485 million years ...200 myr after the first appearance of bryozoans in the fossil record. Despite the abundance of bryozoans at the present day and in the fossil record, our understanding of their phylogeny lags well behind that of many other phyla of similar diversity. This reflects, in part, the lack of eco-nomic interest in living and fossil bryozoans, but alsoBryozoans are present in many benthic marine habitats, where they range from minor to dominant ecological elements. At the present day and apparently ...Browse 78 bryozoa photos and images available, or search for crinoid to find more great photos and pictures. Browse Getty Images' premium collection of high-quality, authentic Bryozoa stock photos, royalty-free images, and pictures. Bryozoa stock photos are available in a variety of sizes and formats to fit your needs.Bryozoans rarely appear as principal frame builders, either alone or in conjunction with other organisms; an exception is a fossil reef from Vermont, USA, of Ordovician age (Pitcher 1964). These reefs are constructed by densely packed colonies of trepostomid bryozoans in upright growth position (Cuffey 1977 ).Members of the colonial phylum Bryozoa have had important roles as marine ecosystem constructors and ecological interactors since their origins (5–7).They are long known to have an evolutionary history visible in the fossil record since the Early Ordovician that has very recently been extended to the Cambrian ().The constituent …Moss animal, any member of the phylum Bryozoa (also called Polyzoa or Ectoprocta), in which there are about 5,000 extant species. Another 15,000 species are known only from …In limestone, branching fossils may be bryozoans.Some bryozoans have star-shapes on the branches; Some corals also can have branching shapes. Branching corals are common in Devonian strata. Fossil plant branches occur in Kentucky's two coal fields and generally occur as black branches in gray shale or siltstone.James, U.P., 1884, Description of four new species of fossils from the Cincinnati Group: ... New trepostomate bryozoans from the Upper Ordovician of Morocco and the temperature influence on zooid size. Journal of Paleontology, Vol. 89, Issue. 3, p. 385. CrossRef; Google Scholar;5 Nov 2021 ... The Bryozoan Mystery: A New Look At An Old Fossil Reveals The Origin Of These Tiny Coral-Like Creatures.1. Introduction. Bryozoans are colonial invertebrates, mostly encrusting, on rocks, shells and seaweeds in the tropics. They are observed in all aquatic habitats, but largely in marine ecosystem, which have been reported from the shoreline to the oceanic depths, even from the hydrothermal vent (Gordon, 2013).These organisms are …25 Apr 2019 ... Bryozoans on the other hand were tiny sea animals which lived in colonies of net like structures known as sea-mats. The mat is the remains of ...Mar 8, 2023 · In 2021, experts said they had found a convincing bryozoan fossil from the Cambrian period, of a species called Protomelission gatehousei. That discovery, also published in Nature, ... Bryozoa. : More on Morphology. Almost all bryozoans are colonial, composed of anywhere from a few to millions of individuals. This skeleton of a living bryozoan, collected at Bahia de los Angeles, Baja California, clearly shows this typical colonial organiation. Each individual, or zooid, is enclosed in a sheath of tissue, the zooecium, that in ...The fossils listed below come from a depth of 1900-1920 feet in the Stearns-Streeter Company's No. 1 Ed Oswald well, in the southeast corner of the southwest quarter of the southwest quarter of sec. 8, T. 12 S., R. 15 W., Russell County: Fauna from 1900-1920 feet in the Stearns-Streeter Ed. Oswald well, Russell County, Kansas.Bryozoans fossils, Brachiopods. London, Geological Museum. long-dead gastropod broken in half - bryozoan stock pictures, royalty-free photos & images. islandkelpfishdec2-22 - bryozoan stock pictures, royalty-free photos & images.Bryozoans are present in many benthic marine habitats, where they range from minor to dominant ecological elements. At the present day and apparently ...Despite their small size, marine bryozoans are abundant in many fossil assemblages thanks to the preservability of their hard calcium carbonate skeletons. To date, more than 17,800 species of fossil bryozoans have been described and more than 6,000 living species are known.Fossilized skeleton of Archimedes Bryozoan. Archimedes is a genus of fenestrate bryozoans with a calcified skeleton of a delicate spiral-shaped mesh that was thickened near the axis into a massive corkscrew-shaped central structure. The most common remains are fragments of the mesh that are detached from the central structure, and these may not ... Bryozoan fossils occur in many forms, including finger-shaped, fan-shaped, mats, spiralling fans, and massive irregular mounds. Many of the fossils, if examined closely with a magnifying glass, will show the individual pits where the individual bryozoans lived.12,19,20), the phylum Bryozoa lacks convincing representatives in the Cambrian fossil record. Proposed Cambrian bryozoans are putative 8, disputed 2,9 or discredited 7,21.Abstract. Bryozoans are present in many benthic marine habitats, where they range from minor to dominant ecological elements. At the present day and apparently throughout their history, bryozoans reached peak levels of taxonomic richness in middle to outer shelf locations (Bottjer and Jablonski, 1988; McKinney and Jackson, 1989; Clarke and ...About Bryozoan Fossils. We also find Paleozoic Era bryozoan fossils on the beach. They earned the common name, lace corals, due to their delicately threaded appearance, but they were not true corals. Instead, they were moss-like animals belonging to the family of Fenestellida known for their fan-shaped, mesh-like constructs. They lived in tight ...Fossil bryozoan collection. Scanning electron micrograph of zooids of Watersipora grandis, a fossil cheilostome bryozoan. The specimen originates from the Pliocene Pinecrest Beds in Sarasota, Florida, North …The state of Michigan used to be covered by a warm, shallow sea and was later an unforgiving glacial landscape. Common fossils found here are trilobites, corals, sea lilies, and even mammoth teeth. In Michigan, we have very weathered rocks along our shoreline. This can cause the fossils to be cut in obscure ways, making their appearance strange.4.5.5 Bryozoan Origins and Fossil Record. Recent Bryozoa comprise the taxa Phylactolaemata, Stenolaemata and Gymnolaemata. Phylactolaemata is considered sister to the other two groups (Waeschenbach et al. 2012) and includes <100 described species (Massard and Geimer 2008). In contrast to the vast majority of bryozoans, phylactolaemates are ...The first unequivocal fossil bryozoans are stenolaemates from the Tremadocian of China (Xia et al. 2007; Ma et al. 2014; Fig. 3). A wide range of morphologies is apparent already in Early Ordovician (Tremadocian and Floian) bryozoans, implying cryptic radiation of biomineralized stenolaemate bryozoans not captured in the known fossil record.Bryozoans, like brachiopods, contain a tentacle-bearing lophophore used in feeding and gas exchange. They also contain a U-shaped gut with a distinct mouth and anus. Bryozoans are inconspicuous fossils, but can be seen most easily on slabs of Ordovician limestone or dolomite with the aid of a magnifying glass or hand lens.Fossil bryozoans often contain so-called brown deposits that indicate remnants of soft tissues (e.g. Boardman & McKinney 1976; Ernst & Voigt 2002). The present paper describes three newly found examples of fossilized soft parts in autozooecial chambers of Palaeostomata in a trepostome, a fenestrate, and in a cryptostome species.Nov 9, 2022 · However, the earliest occurrence of bryozoan fossils (Protomelission gatehousei from Australia and South China) and (the Age 4 Cambrian Harkless bryomorph fossil from western United States) are dated to the early Cambrian, which is younger than the age observed from our molecular clock analysis and also falls outside the range of the 95% CI ... The origin of Bryozoa has long been an intriguing mystery, largely due to the dearth of unambiguous bryozoan fossils within Cambrian strata1-5. Recently reported earliest bryozoan Protomelission 2, an early Cambrian phosphatized microfossil from Australia and China, was subsequently contested and proposed as calcified dasyclad algae1.Bryozoans—Among the most abundant fossils in the world, bryozoans (fig. 7) are also widespread today, both in marine and freshwater environments, living at all latitudes and depths ranging downward to at least 27,900 feet (8,500 meters). Bryozoans are small animals (just large enough to be seen with the naked eye) that live exclusively in ...Fenestella (bryozoan) Fenestella. (bryozoan) Fenestella is a genus of bryozoans or moss animals, forming fan–shaped colonies with a netted appearance. It is known from the Middle Ordovician to the early Upper Triassic ( Carnian ), reaching its largest diversity during the Carboniferous. Many hundreds of species have been described from marine ...Bryozoans, like brachiopods, contain a tentacle-bearing lophophore used in feeding and gas exchange. They also contain a U-shaped gut with a distinct mouth and anus. Bryozoans are inconspicuous fossils, but can be seen most easily on slabs of Ordovician limestone or dolomite with the aid of a magnifying glass or hand lens.One Bryozoan fossil displayed in an acrylic case. A perfect addition for your fossil collection. The images are representative of the specimen you will ...Fossil bryozoans often contain so-called brown deposits that indicate remnants of soft tissues (e.g. Boardman & McKinney 1976; Ernst & Voigt 2002). The present paper describes three newly found examples of fossilized soft parts in autozooecial chambers of Palaeostomata in a trepostome, a fenestrate, and in a cryptostome species. ...Trammel Fossil Park. Trammel Fossil Park is located just a little ways north of Cincinnati, and it’s home to a number of brachiopod and bryozoan fossils from the Ordovician period. You’re able to keep any specimens you find, and it’s an easy to reach location. The park does have open hours, and it closes by 8 in the evening.Jan 5, 2023 · These screw-shaped fossils were support structures for Mississippian fan-shaped bryozoan colonies, called Archimedes. Note the small Taxocrinus crinoid body fossil in the lower left corner. Some Mississippian rocks contain so many broken-up fossils crinoids that the Mississippian became known as the Age of Crinoids. Bryozoans are an important part of the benthic marine fauna in a wide variety of modern environments and are found in rock forming abundance in a number of settings throughout much of the Phanerozoic. Bryozoologists and nonspecialists have grouped taxa into colonial growth forms (e.g., erect fenestrates or encrusting sheets), both to simplify ...The Bryozoa are the only animal phylum with an extensive fossil record that does not appear in Cambrian or late Precambrian rocks. The oldest known fossil bryozoans, including representatives of both major marine groups, the Stenolaemata (tubula r bryozoans) and Gymnolaemata (boxlike bryozoans), appear in the Early Ordovician . It is plausible ... Abstract. Bryozoans are present in many benthic marine habitats, where they range from minor to dominant ecological elements. At the present day and apparently throughout their history, bryozoans reached peak levels of taxonomic richness in middle to outer shelf locations (Bottjer and Jablonski, 1988; McKinney and Jackson, 1989; Clarke and ...Written by experts in the field, Australian Bryozoa Volume 1: Biology, Ecology and Natural History is the first of two volumes describing Australia’s 1200 known species of bryozoans, the richest diversity of bryozoans of any country in the world. It contains chapters on the discovery of bryozoans, their morphology, classification and fossil history, their roles in biosecurity and …Cryptostomata, order of bryozoans (small colonial animals) found as fossils in rocks of Ordovician to Permian age (between 488 million and 251 million years old). Many holes are exhibited, which probably contained individual animals of the colony. Cryptostome colonies consist of groups of short,Bryozoa (moss animals) is the most diverse lophophorate phylum in Earth history, yet we know very little about when and where they first evolved. Fossil evidence from Australia & China unveils the oldest bryozoans during the Cambrian explosion, extending their first occurrence by ~35 million years. Published Oct 27, 2021.Nov 21, 2020 · Dr Paul D Taylor (UK) Fossil collectors often overlook, or worse discard, bryozoans. There are several reasons: some bryozoans are small and not easily spotted in the field, others are mistaken for non-descript sponges or algae, while bryozoans cemented to the surfaces of other fossils can be cursed for detracting from the value of the… Fossil bryozoan collection. Scanning electron micrograph of zooids of Watersipora grandis, a fossil cheilostome bryozoan. The specimen originates from the Pliocene Pinecrest Beds in Sarasota, Florida, North America. Fenestella (bryozoan) Fenestella. (bryozoan) Fenestella is a genus of bryozoans or moss animals, forming fan–shaped colonies with a netted appearance. It is known from the Middle Ordovician to the early Upper Triassic ( Carnian ), reaching its largest diversity during the Carboniferous. Many hundreds of species have been described from marine ...Fossils of about 15,000 bryozoan species have been found. Bryozoans are among the three dominant groups of Paleozoic fossils. Bryozoans with calcitic skeletons were a major source of the carbonate minerals that make up limestones, and their fossils are incredibly common in marine sediments worldwide from the Ordovician onward. Links to: Recent & Fossil Bryozoa; and the International Bryozoology Association. All bryozoan SEM images are the property of the Smithsonian Institution ( ...Bryozoans are a diverse phylum of colonial, non-photosythetic filter-feeding aquatic invertebrates, with ∼5700 extant ( Horowitz and Pachut, 1994) and ∼15,000 fossil species ( Amini et al., 2004 ). They are commonly referred to as “lace corals”, despite being quite unrelated to corals (phylum: Cnidaria).Fossils are often said to take a million years to form. However, as of 2014 it has been proven that a fossil can take a shorter period of time to form. This period can be a thousand years or less.Seven fenestrate bryozoans are described from the Middle Devonian of the Eifel. Three species were identified as Prolixicella bifurcata Ernst and Schroeder, 2007, Rectifenestella aculeata (Sandberger and Sandberger, 1856), and Spinofenestella antiqua (Goldfuss, 1826). Four species are described in open nomenclature: Rectifenestella sp. 1 …In older fossil reefs, branching and lattice bryozoans inhibited movement of loose sediments around reefs, functioning as sediment baffles,, trappers, binders, or stabilizers. In other reef structures, dead coral bioherms’ surfaces were covered by a solid veneer of encrusting bryozoans. In still others, originally more extensive bryozoan ...Photomicrograph of bryozoa microfossil. This sample is about 1 mm wide. Devonian. Fossil and Prairie Park Preserve, Silos and Smokestacks National Heritage ...In 2021, for instance, scientists decided that a 515-million-year-old fossil showed the earliest evidence of an animal group called the bryozoans, named Protomelission gatehousei. This discovery ...Bryozoans are some of the most abundant fossils in the world. They are also widespread today, both in marine and freshwater environments, living at all latitudes and at depths ranging downward to at least 27,900 feet (8,500 meters). Marine bryozoans show up in the fossil record in the early part of the Ordovician Period, about 485 million years ... Fossil bryozoan collection. Scanning electron micrograph of zooids of Watersipora grandis, a fossil cheilostome bryozoan. The specimen originates from the Pliocene Pinecrest Beds in Sarasota, Florida, North America.bryozoa; Comments. This is a common find at this particular quarry, this one P. collum has encrusted what appears to be a Chlamys cookei bivalve. After deciding to add this bryozoa, I had to do a lot of research. What I found is that I really knew nothing about bryozoans. I had always believed this to be an encrusting type bryozoa.A new look at old fossils Our research, published today in Nature, reveals bryozoans were indeed present during the Cambrian Explosion. The key to solving the …branching bryozoan. Kingdom: Animalia Phylum: Bryozoa Class: Stenolaemata Order: Cystoporata Family: Hexagonellidae Stock photo Colony of the disc-like cyclostome bryozoan 'Berenicea', 1.7 cm in diameter, encrusting a shell fragment from the Jurassic. by Science Source ...Bryozoans. Bryozoans are colonial invertebrates, many of which build elaborate skeletons of calcium carbonate. Bryozoans are common in today’s oceans, where they are frequently found encrusting rocks or shells. ... Crinoid fossils are most commonly found as "columnals," pieces of the stalk that hold the head (calyx) above the surface. The ...Bryozoans. Introduction. The Bryozoa, also known as Ectoprocta or commonly as moss animals, are a phylum of aquatic invertebrate animals that resemble corals. They are found in marine, brackish and freshwater habitats. Marine species are common on coral reefs but a few occur in oceanic trenches, and others are found in polar waters..Introduction. The Ectoprocta, or Bryozoa, is primarily a marine group with over, 8,000 recognized species and a rich fossil record with many thousands more. The 100 or so bryozoan species known from fresh water would seem to be overshadowed by such a robust family tree.5 Nov 2021 ... The Bryozoan Mystery: A New Look At An Old Fossil Reveals The Origin Of These Tiny Coral-Like Creatures.Note the unique pedicle opening on the pedicle valve. Page 7. Trace Fossils. Stromatolites. Bryozoans. Corals. Crinoids. Tentaculitids.RM H3YT5F–Sample of a Bryozoa fossil, also known as the Polyzoa, Ectoprocta or commonly as moss animals, are a phylum of aquatic invertebrate animals.This is why roughly 15,000 species of fossil bryozoans are known to science. The early Cambrian bryozoan Protomelission gatehousei from the Flinders Ranges, South Australia. Image a shows a ...Members of the colonial phylum Bryozoa have had important roles as marine ecosystem constructors and ecological interactors since their origins (5–7).They are long known to have an evolutionary history visible in the fossil record since the Early Ordovician that has very recently been extended to the Cambrian ().The constituent …The state of Michigan used to be covered by a warm, shallow sea and was later an unforgiving glacial landscape. Common fossils found here are trilobites, corals, sea lilies, and even mammoth teeth. In Michigan, we have very weathered rocks along our shoreline. This can cause the fossils to be cut in obscure ways, making their appearance strange.6 Feb 2020 ... Here, we compared the rate of description between extant and fossil species of the same group of marine invertebrates, Bryozoa. There are nearly ...Chapter contents: Echinodermata –– 1. Exclusively Fossil Taxa–– 2. Crinoidea –– 3. Asteroidea –– 4. Ophiuroidea–– 5. Echinoidea ←–– 6. Holothuroidea You can find 3D models of Echinoidea here! This page was written by Jansen Smith and Jaleigh Q. Pier. It was last updated on May 27, 2020.Above image: Photograph of live sea urchins in a touch tank. Image …
Purchase a jigsaw puzzle featuring the photograph "Fossil Bryozoan" by A.b. Joyce. Our puzzles are made from premium paper stock and include a semi-gloss .... Olathe north athletics
Common Mississippian fossils found in Kentucky include corals (Cnidaria), bryozoans, brachiopods, trilobites, snails (gastropods), clams (pelecypods), squid-like animals (cephalopods), crinoids and blastoids (echinoderms), fish teeth (Pisces), and microscopic animals like ostracodes and conodonts. When there was emergent land in the form of low ...The Harkless fossils resemble some esthonioporate and cystoporate bryozoans, showing a radiating pattern of densely packed tubes of the same diameter and cross-sectional shape. Further, they show partitioning of new individuals from parent tubes through the formation of a separate wall, a characteristic of interzooecial budding in …21 Nov 2020 ... Fossil bryozoans in Britain occur in marine sedimentary rocks from every post-Cambrian geological period except the Triassic. Ordovician ...Fossil bryozoan collection. Scanning electron micrograph of zooids of Watersipora grandis, a fossil cheilostome bryozoan. The specimen originates from the Pliocene Pinecrest Beds in Sarasota, Florida, North America. 200 myr after the first appearance of bryozoans in the fossil record. Despite the abundance of bryozoans at the present day and in the fossil record, our understanding of their phylogeny lags well behind that of many other phyla of similar diversity. This reflects, in part, the lack of eco-nomic interest in living and fossil bryozoans, but alsoThe Harkless fossils resemble some esthonioporate and cystoporate bryozoans, showing a radiating pattern of densely packed tubes of the same diameter …Bryozoan. Bryozoans (from the ancient Greek for “moss animals”) are so named because some living bryozoan colonies resemble mosses. Not to be confused with plants, bryozoans are invertebrate animals with a long fossil record, from the Early Ordovician Period to the present. Modern species inhabit freshwater, brackish, and marine environments.Fossils previously believed to have been left by prehistoric tentacle-bearing aquatic invertebrates called Bryozoans may in fact have been created by a different source: seaweed. That's the conclusion of a new study of the 500 million-year-old remains, which took a fresh look at Protomelission gateshousei fossils that were thought to represent ...Oct 27, 2021 · The oldest fossils previously confirmed to be bryozoans are from the earliest part of the Ordovician, during the time interval called the Tremadocian stage (485.4 million to 477.7 million years ... Fossil bryozoan collection. Scanning electron micrograph of zooids of Watersipora grandis, a fossil cheilostome bryozoan. The specimen originates from the Pliocene Pinecrest Beds in Sarasota, Florida, North America.Fenestella (bryozoan) Fenestella. (bryozoan) Fenestella is a genus of bryozoans or moss animals, forming fan–shaped colonies with a netted appearance. It is known from the Middle Ordovician to the early Upper Triassic ( Carnian ), reaching its largest diversity during the Carboniferous. Many hundreds of species have been described from marine ...Bryozoans are some of the most abundant fossils in the world. They are also widespread today, both in marine and freshwater environments, living at all latitudes and at depths ranging downward to at least 27,900 feet (8,500 meters). Marine bryozoans show up in the fossil record in the early part of the Ordovician Period, about 485 million years ...Fossil evidence unveils an early Cambrian origin for Bryozoa | Nature Bryozoans (also known as ectoprocts or moss animals) are aquatic, dominantly sessile, ….