Homotrypa
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Homotrypa
''Homotrypa'' is an extinct genus of bryozoa Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic invertebrate animals, nearly all living in sedentary colonies. Typically about long, they have a special feeding structure called a l ...ns from the Ordovician and Silurian periods, known from fossils found in the United States. Its colonies are branch-like and have small monticules made of groups of three or four larger zooecia slightly protruding out from the main surface of the colony. In cross section, the zooecia (tubes housing individual zooids) are erect in axis and gently curve toward the surface of the colony. Species *''Homotrypa curvata'' (Ulrich, 1882) *''Homotrypa niagarensis'' (Ernst, Brett and Wilson, 2019) *''Homotrypa anticostiensis'' (Bassler, 1928) *''Homotrypa ramulosa'' (Bassler, 1903) References Trepostomata Animals described in 1882 Prehistoric bryozoan genera {{Bryozoan-stub ...
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Edward Oscar Ulrich
Edward Oscar Ulrich (1 February 1857, in Covington, Kentucky – 22 February 1944, in Washington, D.C.) was an invertebrate paleontologist specializing in the study of Paleozoic fossils. Biography Ulrich was educated at Wallace College and the Ohio Medical College. Abandoning the practice of medicine, he became curator of the Cincinnati Society of Natural History in 1877, and later was paleontologist to geological surveys of Illinois, Minnesota, and Ohio, also associate editor for ten years of the ''American Geologist''. Ulrich was a prolific writer, publishing numerous pamphlets on the subject of American paleontology, treating particularly the fossil Bryozoa, Gastropoda, Ostracoda, and Pelecypoda. In 1930 he was awarded the Mary Clark Thompson Medal from the United States National Academy of Sciences, National Academy of Sciences, and he was awarded the Penrose Medal in 1932. In 1926 in paleontology, 1926, with Ray S. Bassler, he described the conodont genus ''Ancyrodella'', ...
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Bryozoa
Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic invertebrate animals, nearly all living in sedentary colonies. Typically about long, they have a special feeding structure called a lophophore, a "crown" of tentacles used for filter feeding. Most marine bryozoans live in tropical waters, but a few are found in oceanic trenches and polar waters. The bryozoans are classified as the marine bryozoans (Stenolaemata), freshwater bryozoans (Phylactolaemata), and mostly-marine bryozoans (Gymnolaemata), a few members of which prefer brackish water. 5,869living species are known. At least two genera are solitary (''Aethozooides'' and ''Monobryozoon''); the rest are colonial. The terms Polyzoa and Bryozoa were introduced in 1830 and 1831, respectively. Soon after it was named, another group of animals was discovered whose filtering mechanism looked similar, so it was included in Bryozoa until 1869, when the two groups were no ...
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Trepostomata
Trepostomatida (the trepostomates) is an extinct order of bryozoans in the class Stenolaemata. Trepostome bryozoans possessed mineralized calcitic skeletons and are frequently fossilized; some of the largest known fossilized bryozoan colonies are branching trepostomes and massive dome-shaped trepostomes. Trepostomes did not have many specialized zooecia beyond ordinary feeding autozooecia. The two main known heteromorphs are exilazooecia and mesozooecia, which had the purpose of maintaining regular spacing between autozooecia. See also * Taxonomy of commonly fossilised invertebrates Although the phylogenetic classification of non-vertebrate animals (both extinct and extant) remains a work-in-progress, the following taxonomy attempts to be useful by combining both traditional (old) ''and'' new (21st-century) paleozoologic ... References External links Prehistoric animal orders Prehistoric bryozoans Extinct bryozoans {{paleo-protostome-stub ...
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Animals Described In 1882
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinoderms and ...
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