Acrotheloidea

Acrotheloidea is an extinct superfamily of discinid brachiopods, that lived from the Early Cambrian to Early Ordovician periods, c. 538 – 471 Ma. They are sometimes alternatively ascribed to the lingulids.

No picture of Acrotheloidea 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 Acrotheloidea, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
LingulidaPBDB
Diet
suspension feederPBDB, for Lingulida
Life habit
low-level epifaunalPBDB, for Lingulida
Motility
stationary, attachedPBDB, for Lingulida
Vision
blindPBDB, for Lingulata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 62 million years on record.

The record covers at least 521 Mya to 458.2 Mya. No occurrence read is dated outside 538.8 Mya to 449.5 Mya.

Cambrian — about 306 of 324 occurrencesCambrianOrdovician — about 18 of 324 occurrencesOrdovician541–537 Mya — about 1 occurrence537–534 Mya — about 3 occurrences534–531 Mya — about 3 occurrences531–528 Mya — about 4 occurrences528–525 Mya — about 6 occurrences525–522 Mya — about 6 occurrences522–519 Mya — about 26 occurrences519–516 Mya — about 37 occurrences516–513 Mya — about 73 occurrences513–510 Mya — about 54 occurrences510–507 Mya — about 24 occurrences507–503 Mya — about 27 occurrences503–500 Mya — about 20 occurrences500–497 Mya — about 15 occurrences497–494 Mya — about 4 occurrences494–491 Mya — about 2 occurrences491–488 Mya — about 2 occurrences488–485 Mya — about 2 occurrences485–482 Mya — about 4 occurrences482–479 Mya — about 3 occurrences479–476 Mya — about 3 occurrences476–472 Mya — about 2 occurrences472–469 Mya — about 2 occurrences469–466 Mya — about 0.3 occurrences460–457 Mya — about 0.4 occurrences457–454 Mya — about 1 occurrence454–451 Mya — about 0.4 occurrences451–448 Mya — about 0.2 occurrences521 Mya458.2 Mya541 Mya448 Mya

324 occurrences of Acrotheloidea on record, most of them in the Cambrian. 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

324 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

102 formations

Forteau — 49.52°N, 57.71°WForteau — 51.02°N, 56.81°WForteau — 51.47°N, 56.84°WForteau — 51.00°N, 56.66°WForteau — 50.98°N, 56.85°WForteau — 49.52°N, 57.82°WWulongqing — 24.95°N, 102.80°EWulongqing — 25.68°N, 102.17°ETindall Limestone — 13.33°S, 130.63°ETindall Limestone — 13.50°S, 131.07°ETindall Limestone — 13.88°S, 131.15°ETindall Limestone — 13.82°S, 131.35°ETindall Limestone — 14.25°S, 131.38°ETindall Limestone — 14.50°S, 132.17°ETindall Limestone — 13.68°S, 131.33°ETindall Limestone — 14.42°S, 132.25°EBastion — 74.10°N, 23.00°WBastion — 74.35°N, 22.77°WBastion — 73.52°N, 24.68°WBastion — 72.85°N, 25.03°WYuanshan — 24.81°N, 102.58°EYuanshan — 25.50°N, 102.40°EYuanshan — 24.84°N, 102.41°EYuanshan — 25.40°N, 103.38°EYuanshan — 24.67°N, 102.65°EYuanshan — 25.68°N, 102.17°EMernmerna Formation — 30.72°S, 139.18°EMernmerna Formation — 31.85°S, 140.63°EMernmerna Formation — 31.01°S, 139.24°EParara — 34.73°S, 137.63°EParara — 34.06°S, 138.02°EKussak — 32.65°N, 73.00°EKussak — 32.74°N, 73.14°EYu'anshan — 25.55°N, 102.40°EYu'anshan — 24.77°N, 102.58°EAndamooka Limestone — 30.12°S, 137.16°EMernmerna — 31.02°S, 139.24°EMernmerna — 30.79°S, 139.14°EWirrapowie Limestone — 30.79°S, 139.14°EBrowns Pond — 42.22°N, 73.73°WPioche Shale — 37.77°N, 114.56°WPioche Shale — 37.61°N, 114.76°WPioche Shale — 37.53°N, 114.73°WJince — 49.78°N, 13.97°EJince — 49.00°N, 14.00°EAjax Limestone — 30.59°S, 138.33°EGiles Creek Dolostone — 23.61°S, 134.48°ELangston — 42.19°N, 112.25°WEl Gavilán — 29.28°N, 110.58°WEl Gavilán — 28.92°N, 109.29°WNepabunna Siltstone — 30.72°S, 139.18°EWheeler Shale — 39.36°N, 111.59°WWheeler Shale — 39.20°N, 113.30°WWheeler Shale — 39.29°N, 113.31°WKinzers — 39.96°N, 76.73°WKinzers — 39.92°N, 76.85°WWirrealpa Limestone — 31.27°S, 138.93°ELancara — 43.01°N, 6.01°WLancara — 42.92°N, 5.30°W

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The named rock units Acrotheloidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 78 further formations hold fewer occurrences each and are not listed. 16 occurrences have no formation on record, which is common for older literature.

Acrotheloidea and its relatives

Cambrian

Where Acrotheloidea and its relatives were recorded in the Cambrian.

Found in the same rock

1,510 taxa

The Paleobiology Database records 273 sites for Acrotheloidea, and this reads 240 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

110 references

Each of the 324 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. 98 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 Acrotheloidea 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 Acrotheloidea, or no answer at all. This entry cannot say which.

No 3D scan of Acrotheloidea 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 itLingulida through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1908