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The largest known extinct bivalve is a species of Platyceramus whose fossils measure up to 3,000 mm (118 in) in length. [ 64 ] In his 2010 treatise, Compendium of Bivalves , Markus Huber gives the total number of living bivalve species as about 9,200 combined in 106 families. [ 65 ]
Tuarangia is a Cambrian shelly fossil interpreted as an early bivalve, [1] though alternative classifications have been proposed and its systematic position remains controversial. [2] It is the only genus in the extinct family Tuarangiidae [ 3 ] and order Tuarangiida . [ 1 ]
Agerostrea is an extinct genus of fossil oysters, marine bivalve molluscs in the family Ostreidae, the true oysters. It is present in the Maastrichtian , the upper stage of the Late Cretaceous epoch, from 72.1 to 66 million years ago.
Gryphaea, one of the genera known as devil's toenails, is a genus of extinct oysters, marine bivalve mollusks in the family Gryphaeidae. These fossils range from the Triassic period to the middle Paleogene period [citation needed], but are mostly restricted to the Triassic and Jurassic. They are particularly common in many parts of Britain.
The fossil record of the genus dates back to the Cretaceous (and maybe the Triassic) (age range: 242.0 to 0.012 million years ago). These fossils have been found all over the world. These fossils have been found all over the world.
All species of this genus, including the remaining extant species, G. humanus, are found in the fossil record from the Cretaceous to the Pliocene (age range: from 99.7 to 2.588 million years ago). Fossils are found in the marine strata of Eastern North America, Eurasia and the Indo-Pacific. [2] Fossil shell of Glossus humanus from Pliocene of Italy
Rudist bivalve, Maurens Formation, Upper Cretaceous, southwestern France. Rudists are a group of extinct box-, tube- or ring-shaped marine heterodont bivalves belonging to the order Hippuritida that arose during the Late Jurassic and became so diverse during the Cretaceous that they were major reef-building organisms in the Tethys Ocean, until their complete extinction at the close of the ...
Camya is an extinct genus of early bivalve [1] and is the only genus in the extinct family Camyidae. [2] The genus is known solely from early Middle Cambrian fossils found in Europe. [2] The genus currently contains a solitary accepted species, Camya asy. [2]