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Atlantic Jackknife Clam

Ensis directus (Conrad 1844)

Biodiversity Heritage Library   cc-publicdomain

Ensis directus (Atlantic Jackknife Clam) is a species of mussels in the family Pharidae. This species is extinct. They are associated with freshwater habitat. They are native to Atlantic Ocean. They are surficial modifiers. Individuals could grow to 100 mm. They have sexual reproduction. They are facultatively mobile animals.

  • URI: http://eol.org/schema/terms/extinct
  • Definition: A taxon is Extinct when there is no reasonable doubt that the last individual has died. A \r\ntaxon is presumed Extinct when exhaustive surveys in known and/or expected habitat, \r\nat appropriate times (diurnal, seasonal, annual), throughout its historic range have failed \r\nto record an individual. Surveys should be over a time frame appropriate to the taxon’s life cycle and life form.
  • Attribution: http://www.iucnredlist.org/technical-documents/categories-and-criteria
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  • URI: http://purl.obolibrary.org/obo/GO_0019953
  • Definition: Capable of creating a new organism by combining the genetic material of two gametes, which may come from two parent organisms or from a single organism, in the case of self-fertilizing hermaphrodites.
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EOL has data for 43 attributes, including:

Known occurrences, collected specimens and observations of Atlantic jackknife clam. View this species on GBIF