Search results
Results From The WOW.Com Content Network
This list of marine gastropod genera in the fossil record is an attempt to list all the genera of sea snails or marine gastropod mollusks which have been found in the fossil record. Nearly all of these are genera of shelled forms, since it is relatively rare for gastropods without a shell ( sea slugs ) to leave any recognizable traces.
As of 2017, 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. [ 6 ] Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class ...
As of 2017, 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the ...
Portal:Gastropods/Selected picture/1 . The sculpture of this shell of Epitonium scalare is raised vertical ribs which are known as costae.Costae are a common feature in the shells of many species within the genus Epitonium, generally known as wentletraps (a word derived from the Dutch word for spiral staircase).
Fossil shell of Nerinea from Italy ... †Nerinea is an extinct genus of fossil sea snails, marine gastropod molluscs in the clade ... Galerie photos de fossiles ...
Most of Michigan's fossil snails are small, but some grew to the size of a human head. It is also possible to find the gastropod Platyceras attached to a crinoid or brachiopod, indicating that they may have fed on their waste. Many of these gastropods fed on algae, and are often found in association with corals, crinoids, and bryozoans. The ...
Fossils of Platyceras sp. from Floresta, Boyacá, Colombia. Platyceras is a genus of extinct Paleozoic sea snails, marine gastropod mollusks in the family Platyceratidae. This genus is known from the Silurian to the Middle Triassic periods and especially abundant in the Devonian and Carboniferous. [1] It is the type genus of the family ...
Fossils of Potamides are found in marine strata from the Permian to the Quaternary(age range: from 265.0 to 1.806 million years ago.). Fossils are known from many localities in Europe, Indonesia, Africa, North America, South America, Pakistan, Japan and Cambodia.