''Perrona descendens'' 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 ...
s, 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 ...
mollusc
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...
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 ...
Clavatulidae
Clavatulidae is a Taxonomy (biology), taxonomic family (biology), family of sea snails, marine gastropod mollusks in the superfamily Conoidea. The family is not well differentiated morphologically.
Clavatulidae was raised, based on cladistic an ...
.
[MolluscaBase eds. (2023). MolluscaBase. Perrona descendens (Hilber, 1879) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1497197 on 2023-08-03]
Description
Distribution
Fossils of this marine species were found in
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...
strata in
Romania
Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...
References
* Cossmann (M.), 1896 - Essais de Paléoconchologie comparée (2ème livraison), p. 1-179 (
* Landau, B. M., Harzhauser, M., İslamoğlu, Y. & da Silva, C. M. (2013). Systematics and palaeobiogeography of the gastropods of the middle Miocene (Serravallian) Karaman Basin, Turkey. Cainozoic Research. 11-13: 1–584.
External links
Hilber, V. (1879). Neue Conchylien aus den mittelsteierischen Mediterranschichten. Sitzungsberichte der Kaiserlichen Akademie der Wissenschafte, mathematisch-naturwissenschaftliche Classe, 1. Abtheilung. 79(5): 416-461Harzhauser, M.; Landau, B.; Janssen, R. (2022). The Clavatulidae (Gastropoda, Conoidea) of the Miocene Paratethys Sea with considerations on fossil and extant Clavatulidae genera. Zootaxa. 5123(1): 1-172
descendens
Gastropods described in 1879
{{paleo-gastropod-stub