Claraia

Claraia Temporal range: 266–237 Ma PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Pectinoida
Superfamily:	Pterinopectinoidea
Family:	Pterinopectinidae
Genus:	Claraia Bittner, 1901

Claraia is an extinct genus of scallop-like bivalve mollusk that lived from the Capitanian stage of the Late Permian to the Anisian stage of the Middle Triassic, 266-237 million years ago. Fossils have been found worldwide in North America, Europe, Asia, Africa, and Australia. It is a common fossil following the Permian-Triassic boundary, suggesting that it experienced rapid diversification during and after the Permian–Triassic extinction event around 251.4 million years ago.

Claraia may have been an opportunistic genus that filled the niche of many benthic invertebrates such as brachiopods that were heavily impacted by the extinction. A narrowing of the byssal notch and a trend towards a smoother shell in species of Claria over time may have led to increased mobility. This increase in mobility may have been an advantage over more sessile animals during the extinction event^[1]. It is thought to have lived in anoxic waters at great depths, and therefore may have been better adapted for the anoxic event that may have occurred during the Permian–Triassic extinction event.

References

1. ^ Feng, Qinglai; Gu, Songzhu; He, Weihong; Meng, Youyan; Weldon, Elisabeth A.; Wu, Shunbao; & Zhang, Fan (2007) A Late Permian to Early Triassic bivalve fauna from the Dongpan Section, Southern Guangxi, South China. Journal of Paleontology 81: 1009–1019.

External links

• Claraia at The Paleobiology Database

This prehistoric mollusc article is a stub. You can help Wikipedia by expanding it.v · Categories: Permian animals Triassic molluscs Prehistoric animals of Africa Prehistoric animals of Asia Prehistoric animals of Australia Prehistoric animals of Europe Prehistoric animals of North America Prehistoric mollusc stubs Wikimedia Foundation. 2010. Игры ⚽ Нужно сделать НИР? Clarabridge Claral Gillenwater Look at other dictionaries: Werfen-Formation — Claraia clarai aus der Werfen Formation ausgestellt im Museum Gröden Die Werfen Formation oder auch Werfener Schichten, ist eine lithostratigraphische Formation der unteren Trias, dem Skythium, der ostalpinen Decken und im Südalpin. Sie ist das… …   Deutsch Wikipedia Triassic Period — Interval of geologic time, с 248–206 million years ago, that marks the beginning of the Mesozoic Era. Many new vertebrates emerged during the Triassic, heralding the major changes that were to occur in both terrestrial and marine life forms… …   Universalium Триасовая система — (период)         триас, первая (нижняя) система мезозойской группы, соответствующая первому периоду мезозойской эры истории Земли; она следует за пермской системой и предшествует юрской. Начало Т. п., по радиологичческим данным, 230 млн. лет… …   Большая советская энциклопедия Permian–Triassic extinction event — …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”