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Fossils of this extinct land snail species are known only from the Late Pliocene/Waipipian (~3.6–3.0 Ma) MÄngere Shellbed, located approximately 30 m below the suburb of Mangere, Auckland. [ 1 ] [ 3 ] It is currently regarded as one of the two oldest known flax snails species represented in the fossil record, along with a single specimen of ...
[11] [12] The total number of living species of freshwater snails is about 4,000. [13] Recently extinct species of gastropods (extinct since 1500) number 444, 18 species are now extinct in the wild (but still exist in captivity), and 69 species are "possibly extinct". [14] The number of prehistoric (fossil) species of gastropods is at least ...
Conus franklinae is a fossil species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails, cone shells or cones. [1] Description.
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.
Turritella agate, in which the fossils are a different genus. One variety of "Turritella agate", that from the Green River Formation in Wyoming, is a fossiliferous rock which does indeed contain numerous high-spired snail shells.
The oldest fossil cerionid is C. acherontis from the Upper Cretaceous Hell Creek Formation, in Montana, northwestern USA. [5] The second oldest record is the genus Brasilennea from the Brazilian Paleocene Itaboraí Basin , in Rio de Janeiro.
Elimia tenera, formerly known as Goniobasis tenera, is an extinct species of freshwater snail with an operculum, in the aquatic gastropod mollusk family Pleuroceridae. [1] This species flourished during the Eocene and is now known only from the fossil record. The genus name Elimia was restored to this species in 1975; [2] formerly it was placed ...
Conus zambaensis is an extinct species of sea snail, ... This marine species of cone snail is found as a fossil in the Neogene of the Dominican Republic.