Английская Википедия:Cladoceramus
Шаблон:Short description Шаблон:Automatic taxobox
Cladoceramus is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived in the Santonian stage of the Late Cretaceous.
Description
Adult shells of Cladoceramus are small to very large size (more than Шаблон:Convert in length).[1] Many species with fine, discrete, juvenile ornamentation on umbo, consisting of closely and evenly to subevenly spaced raised concentric growth lines without rugae. Posterior auricle well-defined, triangular, separated from disc by auricular sulcus; a post-umbonal sulcus occurs in some species, as do very small anterior auricles ("ears").[1]
Biostratigraphic significance
The first appearance of the species Cladoceramus undulatoplicatus marks the beginning of the Santonian stage.
Distribution
Fossils of the genus have been found in:[2]
- Matulla Formation, Egypt
- United States
- Forbes Shale, California
- Smoky Hill Shale, Niobrara Formation, Colorado and New Mexico
- Austin Chalk, Texas
- Mancos Shale, Wyoming
References
- ↑ 1,0 1,1 Lower Turonian Euramerican Inoceramidae: A morphologic, taxonomic, and biostratigraphic overview. A report from the first Workshop on Early Turonian Inoceramids (Oct. 5-8, 1992) in Hamburg, Germany; organized by Heinz Hilbrecht and Peter J. Harries
- ↑ Cladoceramus at Fossilworks.org
- Английская Википедия
- Inoceramidae
- Prehistoric bivalve genera
- Index fossils
- Santonian life
- Fossils of Egypt
- Cretaceous California
- Paleontology in California
- Cretaceous Colorado
- Paleontology in Colorado
- Cretaceous geology of New Mexico
- Paleontology in New Mexico
- Cretaceous Texas
- Paleontology in Texas
- Paleontology in Wyoming
- Prehistoric bivalves of North America
- Fossil taxa described in 1961
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
