''Aspa'' is a
genus of
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
s,
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
* Marine pollution
Military
* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusks in the
family Bursidae
The Bursidae, common name "frog snails" or "frog shells", are a rather small taxonomic family of large sea snails, marine gastropod predatory snails in the clade Littorinimorpha. MolluscaBase eds. (2020). MolluscaBase. Bursidae Thiele, 1925. A ...
, the frog shells.
Species
Species within the genus ''Aspa'' include:
* ''
Aspa marginata'' (Gmelin, 1791)
The genus ''Aspa'' is known in the fossil record from the
Miocene epoch, about 13.65 million years ago. These fossils have been found in the
Quaternary
The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ...
of
Namibia and
Spain, in the
Pliocene of
Costa Rica
Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ...
,
Greece and
Spain and in the
Miocene of
Austria,
Greece,
Hungary and
Italy.
Fossilworks
/ref>
References
Bursidae
Monotypic gastropod genera
{{Bursidae-stub