''Crassispira angulosa'' 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 ...
Pseudomelatomidae
Pseudomelatomidae is a family (biology), family of predatory sea snails, marine gastropods included in the superfamily Conoidea (previously Conacea) and part of the Neogastropoda (Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), Bouchet & Ro ...
, the turrids and allies.
Worldwide Mollusc Species Data Base: ''Crassispira angulosa''
/ref>
Subspecies: † ''Crassispira angulosa acyensis'' (A.E.M. Cossmann, 1889) (synonym: ''Drillia (Crassispira) angulosa acyensis'' Cossmann, 1889)
Description
The length of the shell attains 6.8 mm.
Distribution
Fossils have been found in Eocene
The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...
strata in the Paris Basin
The Paris Basin () is one of the major geological regions of France. It developed since the Triassic over remnant uplands of the Variscan orogeny (Hercynian orogeny). The sedimentary basin, no longer a single drainage basin, is a large sag in ...
, France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
.
References
* Cossmann (M.), 1896 – Essais de Paléoconchologie comparée (2ème livraison), p. 1–179
* Cossmann (M.), 1902 – Catalogue illustré des coquilles fossiles de l'Éocène des environs de Paris (3ème appendice). Annales de la Société royale Malacologique de Belgique, t. 36, p. 9–110
Cossmann (M.) & Pissarro (G.), 1913 – Iconographie complète des coquilles fossiles de l'Éocène des environs de Paris, t. 2, p. pl. 46–65
External links
MNHN: ''Drillia angulosa''
Pacaud J.M. & Le Renard J. (1995). Révision des Mollusques paléogènes du Bassin de Paris. IV- Liste systématique actualisée. Cossmanniana. 3(4): 151–187
angulosa
Gastropods described in 1834
{{Pseudomelatomidae-stub