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Tentaculita
Tentaculita is an extinct class of lophophorates ranging from the Early Ordovician to the Middle Jurassic. They were suspension feeders with a near worldwide distribution. For a more thorough discussion, see '' Tentaculites''. The presence of perforate septa and "septal necks" has been used to argue for a cephalopod affinity, whereas the shell microstructure, notably the presence of punctae, points to a brachiopod relationship, and preserved musculature suggests a relationship with bryozoans. Subdivisions ; Subclasses * Chonioconarida * Dacryoconarida ;Orders * Cornulitida * Microconchida * Tentaculitida * Trypanoporida ;Genera *'' Anticalyptraea'' *'' Lindstroemiella'' References Further reading * Farsan, N. M. (1994). Tentaculiten: Ontogenese, Systematik, Phylogenese, Biostratonomie und Morphologie. ''Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft'' 547: 1-128. * * External links The Paleobiology Database {{Taxonbar, from=Q1758465 Early Ordo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anticalyptraea
''Anticalyptraea'' is a fossil genus (biology), genus of encrusting tentaculitoid tubeworms from the Silurian to Devonian of Europe and North America (Vinn, 2010). ''Anticalyptraea'' commonly encrust various invertebrate fossils such as Stromatoporoidea, stromatoporoids, Rugosa, rugose corals, bryozoans, brachiopods and crinoids, but they can also be common on the Carbonate hardgrounds, hardgrounds. They were often attacked by predators in the Pridoli of Baltica. ''Anticalyptraea'' was traditionally interpreted as a phorid gastropod, but was later assigned to the class (biology), Class Tentaculita. Its dextrally coiled substrate-cemented tube, bulbous initial chamber, vesicular tube wall and pseudopunctate microlamellar shell structure closely resembles Trypanoporida, trypanoporids (Tentaculita), but ''Anticalyptraea'' differs in having the cones of the pseudopunctae oriented in the opposite direction. Pseudopunctae oriented similarly to ''Anticalyptraea'' occur in ''Cornulites'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |