The false ark shells (''Cucullaea'') are a small
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
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
* ...
bivalve
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...
mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...
s related to the
ark clam
Ark clam is the common name for a family of small to large-sized saltwater clams or marine bivalve molluscs in the family Arcidae. Ark clams vary both in shape and size. They number about 200 species worldwide.
The shells of ark clams are of ...
s. The genus is the only member of the
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Cucullaeidae.
Species
The World Register of Marine Species lists the following
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
:
*
†''
Cucullaea elegans''
(Fischer)
*
†''
Cucullaea gigantea''
Conrad, 1862[Cucullaea gigantea Conrad, 1862 in Paleobiology Database (2018) https://www.gbif.org/species/121408017]
*''
Cucullaea granulosa''
Jonas, 1846[
*'' Cucullaea labiata'' ]Lightfoot
Lightfoot may refer to:
* Lightfoot (surname)
* Lightfoot (lacrosse), Native American lacrosse player
* Lightfoot, Virginia, an area of York County that is west of Williamsburg, VA
* Operation Lightfoot, part of the Second Battle of El Alamein
* ...
, 1786)[
*'' Cucullaea petita'' Iredale, 1939][
*'' Cucullaea vaga'' Iredale, 1930][
]
References
Cucullaeidae
{{bivalve-stub