Littorina (Neritrema) keenae

No picture of Littorina (Neritrema) keenae was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Littorina (Neritrema) keenae, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Also called
eroded periwinklePBDB
Sits inside
NeritremaPBDB
Diet
grazerPBDB, for Littorinidae
Life habit
epifaunalPBDB, for Littorinidae
Motility
actively mobilePBDB, for Littorinidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 645 thousand years on record.

The record covers at least 774 ka to 129 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.

Pliocene — about 0 of 46 occurrencesPleistocene — about 46 of 46 occurrencesPleistoceneHolocene — about 0 of 46 occurrences2.7–2.6 Mya — about 0.1 occurrences2.6–2.5 Mya — about 0.6 occurrences2.5–2.4 Mya — about 0.6 occurrences2.4–2.3 Mya — about 0.6 occurrences2.3–2.2 Mya — about 0.6 occurrences2.2–2.1 Mya — about 0.6 occurrences2.1–2.0 Mya — about 0.6 occurrences2.0–1.8 Mya — about 0.6 occurrences1.8–1.7 Mya — about 0.6 occurrences1.7–1.6 Mya — about 0.6 occurrences1.6–1.5 Mya — about 0.6 occurrences1.5–1.4 Mya — about 0.6 occurrences1.4–1.3 Mya — about 0.6 occurrences1.3–1.2 Mya — about 0.6 occurrences1.2–1.1 Mya — about 0.6 occurrences1.1–1.0 Mya — about 0.6 occurrences1.0–924 ka Mya — about 0.6 occurrences924 ka–821 ka Mya — about 0.6 occurrences821 ka–719 ka Mya — about 1 occurrence719 ka–616 ka Mya — about 2 occurrences616 ka–513 ka Mya — about 2 occurrences513 ka–411 ka Mya — about 2 occurrences411 ka–308 ka Mya — about 2 occurrences308 ka–205 ka Mya — about 2 occurrences205 ka–103 ka Mya — about 7 occurrences103 ka–0 Mya — about 19 occurrences774 ka129 ka3.08 Mya0 Mya

46 occurrences of Littorina (Neritrema) keenae 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

46 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

6 formations

Discovery Point — 29.00°N, 118.27°WDiscovery Point — 29.00°N, 118.23°WDiscovery Point — 29.10°N, 118.25°WUnnamed — 33.24°N, 119.51°WUnnamed — 33.24°N, 119.55°WSan Pedro Sand — 33.74°N, 118.28°WQuaternary terrace — 33.75°N, 118.33°WQuaternary terrace — 33.76°N, 118.35°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WTimms Point Silt — 33.71°N, 118.27°W

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The named rock units Littorina (Neritrema) keenae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 20 occurrences have no formation on record, which is common for older literature.

Littorina (Neritrema) keenae and its relatives

Pleistocene

Where Littorina (Neritrema) keenae and its relatives were recorded in the Pleistocene.

Found in the same rock

950 taxa

The Paleobiology Database records 35 sites for Littorina (Neritrema) keenae, 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

Each of the 46 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 content0

No picture of Littorina (Neritrema) keenae was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Littorina (Neritrema) keenae, or no answer at all. This entry cannot say which.

No 3D scan of Littorina (Neritrema) keenae 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 itNeritrema through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Rosewater 1978)