Ensis directus

Hans Hillewaert · CC BY-SA 4.0 · via Wikidata/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- EnsisPBDB
- Diet
- suspension feederPBDB, for Ensis
- Life habit
- infaunalPBDB, for Ensis
- Motility
- facultatively mobilePBDB, for Ensis
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 15 million years on record.
The record covers at least 15.98 Mya to 129 ka. No occurrence read is dated outside 23.04 Mya to 11.7 ka.
83 occurrences of Ensis directus on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
83 occurrences- Miocene18%
- Pliocene14%
- Pleistocene67%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
22 formations
- Pamlico Formation13
- Acredale Formation5
- Kirkwood Formation5
- Waccamaw Formation5
- Horry Clay Formation5
- Chowan RIver Formation4
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The named rock units Ensis directus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.
Ensis directus and its relatives
PleistoceneWhere Ensis directus and its relatives were recorded in the Pleistocene.
Found in the same rock
852 taxa- Crepidula fornicata16 sites
- Crepidula plana16 sites
- Neverita duplicatus14 sites
- Nucula (Nucula) proxima14 sites
- Crassostrea virginica11 sites
- Busycon10 sites
- Crassinella lunulata10 sites
- Eupleura caudata10 sites
- Nuculana acuta10 sites
- Spisula (Hemimactra) solidissima10 sites
- Turritella10 sites
- Anadara (Larkinia) transversa9 sites
- Anomia simplex9 sites
- Crassinella9 sites
- Olivella mutica9 sites
- Abra aequalis8 sites
- Caryocorbula contracta8 sites
- Eontia ponderosa8 sites
- Mercenaria campechiensis8 sites
- Mulinia lateralis8 sites
- Angulus agilis7 sites
- Astarte7 sites
- Calyptraea centralis7 sites
- Cumingia tellinoides7 sites
The Paleobiology Database records 31 sites for Ensis directus, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
16 references- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions27
- Studies on the marine Pleistocene: Part II. The marine Pleistocene mollusks of eastern North America26
- Late Pliocene and Early Pleistocene Mollusca from the James City and Chowan River Formations at Lee Creek Mine4
- The Molluscan Fauna of the Alum Bluff Group of Florida4
- Miocene invertebrate fauna of New Jersey4
- The fauna and paleoecology of the Late Pleistocene marine sediments of southeastern Virginia3
- Preliminary biostratigraphy and molluscan fauna of the Goose Creek Limestone of eastern South Carolina2
- The Flanner Beach Formation (Middle Pleistocene) in eastern North Carolina2
- Neogene Stratigraphy of the lower Coast Plain of the Carolinas2
- Well-boring at Brandywine Lighthouse in Delaware Bay. Part I. - Geology and Macrofossils2
- Pliocene and Pleistocene2
- Mollusca: Shoal River Formation (Middle Miocene1
Each of the 83 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 4 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Ensis directus
- Source
- Wikidata/Commons
- Credit
- Hans Hillewaert
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Ensis directus was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itEnsis through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1844)