Spisula (Hemimactra)

No picture of Spisula (Hemimactra) 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 Spisula (Hemimactra), or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
SpisulaPBDB
Diet
suspension feederPBDB, for Spisula
Life habit
infaunalPBDB, for Spisula
Motility
facultatively mobilePBDB, for Spisula
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 23 million years on record.

The record covers at least 23.04 Mya to 11.7 ka. No occurrence read is dated outside 27.3 Mya to 0 Mya.

Oligocene — about 3 of 97 occurrencesOligoceneMiocene — about 30 of 97 occurrencesMiocenePliocene — about 11 of 97 occurrencesPliocenePleistocene — about 52 of 97 occurrencesPleistocene28–27 Mya — about 0.3 occurrences27–26 Mya — about 0.7 occurrences26–25 Mya — about 0.7 occurrences25–24 Mya — about 0.7 occurrences24–23 Mya — about 0.7 occurrences23–22 Mya — about 0.1 occurrences21–20 Mya — about 0.1 occurrences20–19 Mya — about 3 occurrences19–19 Mya — about 3 occurrences19–18 Mya — about 3 occurrences18–17 Mya — about 3 occurrences17–16 Mya — about 2 occurrences14–13 Mya — about 6 occurrences13–12 Mya — about 7 occurrences12–11 Mya — about 3 occurrences5.6–4.6 Mya — about 1 occurrence4.6–3.7 Mya — about 2 occurrences3.7–2.8 Mya — about 6 occurrences2.8–1.9 Mya — about 11 occurrences1.9–928 ka Mya — about 10 occurrences928 ka–0 Mya — about 33 occurrences23.04 Mya11.7 ka27.8 Mya0 Mya

97 occurrences of Spisula (Hemimactra) 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

97 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

22 formations

Choptank — 38.39°N, 76.57°WChoptank — 38.41°N, 76.48°WChoptank — 38.38°N, 76.38°WChoptank — 38.52°N, 76.51°WOak Grove — 30.90°N, 84.58°WOak Grove — 30.92°N, 86.57°WOak Grove — 30.97°N, 86.46°WWaccamaw — 34.33°N, 78.20°WWaccamaw — 34.21°N, 81.31°WWaccamaw — 33.97°N, 78.39°WWaccamaw — 34.17°N, 78.60°WPamlico — 32.78°N, 79.90°WPamlico — 35.70°N, 75.74°WPamlico — 35.50°N, 76.27°WPamlico — 35.25°N, 76.57°WPamlico — 35.59°N, 76.23°WPamlico — 36.33°N, 76.17°WPamlico — 33.56°N, 79.08°WYorktown — 37.23°N, 76.96°WYorktown — 35.51°N, 77.62°WYorktown — 34.90°N, 78.05°WYorktown — 37.06°N, 76.63°WYorktown — 35.15°N, 77.14°WAcredale — 36.79°N, 76.17°WCanepatch — 33.83°N, 78.89°WDuplin — 34.50°N, 79.11°WDuplin — 34.62°N, 79.01°WDuplin — 34.90°N, 78.05°WHorry Clay — 33.69°N, 78.89°WChowan RIver — 35.28°N, 76.65°WChowan RIver — 36.05°N, 76.73°WFort Thompson — 26.76°N, 81.44°WSooke — 48.43°N, 124.09°WSooke — 48.50°N, 124.32°WNorfolk — 36.92°N, 76.49°WJames City — 35.28°N, 76.65°WGoose Creek — 33.33°N, 80.15°WPresumpscot — 43.84°N, 70.10°WTalbot — 38.07°N, 76.36°WCalvert — 38.64°N, 76.52°WTamiami — 25.67°N, 80.31°WShoal River — 30.72°N, 86.12°WBermont — 26.68°N, 80.67°WDivision D — 49.62°N, 126.83°W

Loading coastlines…

The named rock units Spisula (Hemimactra) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 18 occurrences have no formation on record, which is common for older literature.

Spisula (Hemimactra) and its relatives

Pleistocene

Where Spisula (Hemimactra) and its relatives were recorded in the Pleistocene.

Found in the same rock

973 taxa

The Paleobiology Database records 56 sites for Spisula (Hemimactra), 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

17 references

Each of the 97 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. 5 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 Spisula (Hemimactra) 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 Spisula (Hemimactra), or no answer at all. This entry cannot say which.

No 3D scan of Spisula (Hemimactra) 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 itSpisula through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Swainson 1840)