Acila (Truncacila) demessa

Searched as Leda truncata. The Paleobiology Database treats Acila (Truncacila) demessa as the accepted name.

No picture of Acila (Truncacila) demessa was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Acila (Truncacila) demessa, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
Acila (Truncacila)PBDB
Diet
deposit feeder, suspension feederPBDB, for Nuculidae
Life habit
infaunalPBDB, for Nuculidae
Motility
facultatively mobilePBDB, for Nuculidae
Vision
blindPBDB, for Bivalvia
Environment
coastal,inner shelf,outer shelf,oceanicPBDB, for Nuculidae

Time the record covers

At least 83 million years on record.

The record covers at least 85.7 Mya to 2.58 Mya. No occurrence read is dated outside 89.8 Mya to 11.7 ka.

Late Cretaceous — about 46 of 48 occurrencesLate CretaceousPaleocene — about 0 of 48 occurrencesEocene — about 0 of 48 occurrencesOligocene — about 0 of 48 occurrencesMiocene — about 0 of 48 occurrencesPliocene — about 0 of 48 occurrencesPleistocene — about 2 of 48 occurrences92–89 Mya — about 0.9 occurrences89–85 Mya — about 2 occurrences85–82 Mya — about 5 occurrences82–79 Mya — about 9 occurrences79–76 Mya — about 9 occurrences76–73 Mya — about 9 occurrences73–70 Mya — about 6 occurrences70–67 Mya — about 4 occurrences67–64 Mya — about 2 occurrences3.1–0 Mya — about 2 occurrences85.7 Mya2.58 Mya92 Mya0 Mya

48 occurrences of Acila (Truncacila) demessa on record, most of them in the Late Cretaceous. 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

48 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

14 formations

Chico — 39.66°N, 121.58°WChico — 39.83°N, 121.71°WChico — 39.86°N, 121.71°WChico — 39.64°N, 121.56°WChico — 39.79°N, 121.63°WChico — 38.72°N, 121.21°WLadd — 33.75°N, 117.68°WLadd — 33.72°N, 117.64°WChatsworth — 34.20°N, 118.69°WJalama — 34.51°N, 120.42°WJalama — 34.51°N, 120.45°WPigeon Point — 37.19°N, 122.40°WMoreno — 36.03°N, 120.14°WMoreno — 36.14°N, 120.36°WWilliams — 33.70°N, 117.63°WFunks — 38.55°N, 122.03°WPanoche — 37.43°N, 121.27°WRosario — 29.58°N, 115.24°WCabrillo — 32.68°N, 117.24°WUhalde — 36.65°N, 120.71°WPleasants Sandstone — 33.65°N, 117.68°WCedar District — 49.56°N, 124.80°W

Loading coastlines…

The named rock units Acila (Truncacila) demessa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Acila (Truncacila) demessa and its relatives

Late Cretaceous

Where Acila (Truncacila) demessa and its relatives were recorded in the Late Cretaceous.

Found in the same rock

369 taxa

The Paleobiology Database records 45 sites for Acila (Truncacila) demessa, 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

21 references

Each of the 48 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. 9 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 Acila (Truncacila) demessa was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Acila (Truncacila) demessa, or no answer at all. This entry cannot say which.

No 3D scan of Acila (Truncacila) demessa 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 itAcila (Truncacila) through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Gabb 1864)