''Admetula postera '' is an extinct
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of
sea snail
Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...
, a marine
gastropod
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, freshwater, and fro ...
mollusk
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...
in the
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
Cancellariidae
Cancellariidae, common name the nutmeg snails or nutmeg shells, are a family (biology), family of small to medium-large sea snails, marine (ocean), marine gastropod mollusks in the clade Neogastropoda. Some of the shells of the species in this ...
, also referred to as the nutmeg snails.
[MolluscaBase eds. (2024). MolluscaBase. Admetula postera (Beyrich, 1856) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1492911 on 2024-05-04]
Description
The length of the shell attains 19 mm, its diameter 12 mm.
Distribution
Fossils have been found in
late Oligocene
The Chattian is, in the geologic timescale
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the pro ...
–
early Miocene
The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages: the Aquitanian age, Aquitanian and Burdigalian stages.
The sub-epoch lasted from 23.03 ± 0.05 annum, Ma to ...
strata in Northern Germany and in Hungary.
References
External links
Beyrich, E. (1856). Die Conchylien des norddeutschen Tertiärgebirges. 4: Fusus, Turbinella. 5: Cancellaria. Zeitschrift der Deutschen Geologischen Gesellschaft. 8: 21–88, pls 1-10; 553–588, pl. 15-17Vicián, Z., Kovács, Z., Stein, G. (2019). Addition to the Egerian (late Oligocene – early Miocene) gastropod fauna of Esztergom (Hungary). Földtani Közlöny 149/2, 149-162
postera
Gastropods described in 1856
{{paleo-gastropod-stub