Geukensia

Searched as Geukensia demissa granosissima. The Paleobiology Database treats Geukensia as the accepted name.

Geukensia is a genus of marine bivalve mollusc in the Mytilidae family, naturally found in the western Atlantic.

Geukensia

Joan Muller. · Public Domain · via Wikipedia/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
MytilidaePBDB
Diet
suspension feederPBDB, for Mytilidae
Life habit
epifaunalPBDB, for Mytilidae
Motility
stationary, attachedPBDB, for Mytilidae
Vision
blindPBDB, for Bivalvia
Environment
lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Mytilidae

Time the record covers

At most 12 thousand years on record.

Every occurrence read is dated to somewhere between 11.7 ka and 0 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pleistocene — about 0 of 3 occurrencesHolocene — about 3 of 3 occurrences17 ka–0 Mya — about 3 occurrences512 ka0 Mya

3 occurrences of Geukensia on record, most of them in the Holocene. 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

3 occurrences

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

1 formation

Michoud — 30.05°N, 89.96°W

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The named rock units Geukensia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Geukensia and its relatives

Holocene

Where Geukensia and its relatives were recorded in the Holocene.

Found in the same rock

230 taxa

The Paleobiology Database records 4 sites for Geukensia, 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

2 references

Each of the 3 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Geukensia

Credit
Joan Muller.
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Geukensia 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.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itMytilidae through timeFormations of the HoloceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Van de Poel 1959