Acrotretidae

Acrotretidae

via iDigBio · via iDigBio. 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
AcrotretoideaPBDB
Diet
suspension feederPBDB, for Acrotretida
Life habit
epifaunalPBDB, for Acrotretida
Motility
stationary, attachedPBDB, for Acrotretida
Vision
blindPBDB, for Lingulata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 83 million years on record.

The record covers at least 516 Mya to 432.9 Mya. No occurrence read is dated outside 538.8 Mya to 426.7 Mya.

Cambrian — about 698 of 1115 occurrencesCambrianOrdovician — about 416 of 1115 occurrencesOrdovicianSilurian — about 1 of 1115 occurrencesSilurian541–537 Mya — about 0.5 occurrences537–533 Mya — about 1 occurrence533–529 Mya — about 1 occurrence529–525 Mya — about 1 occurrence525–522 Mya — about 1 occurrence522–518 Mya — about 14 occurrences518–514 Mya — about 23 occurrences514–510 Mya — about 25 occurrences510–506 Mya — about 45 occurrences506–502 Mya — about 106 occurrences502–498 Mya — about 160 occurrences498–494 Mya — about 175 occurrences494–491 Mya — about 89 occurrences491–487 Mya — about 56 occurrences487–483 Mya — about 51 occurrences483–479 Mya — about 48 occurrences479–475 Mya — about 30 occurrences475–471 Mya — about 60 occurrences471–467 Mya — about 30 occurrences467–463 Mya — about 16 occurrences463–459 Mya — about 49 occurrences459–456 Mya — about 44 occurrences456–452 Mya — about 27 occurrences452–448 Mya — about 42 occurrences448–444 Mya — about 17 occurrences444–440 Mya — about 2 occurrences436–432 Mya — about 0.1 occurrences432–428 Mya — about 0.6 occurrences428–424 Mya — about 0.3 occurrences516 Mya432.9 Mya541 Mya424 Mya

1,115 occurrences of Acrotretidae 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

1,115 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

227 formations

Riley — 30.64°N, 99.26°WRiley — 30.92°N, 98.61°WRiley — 30.81°N, 98.28°WRiley — 30.91°N, 99.00°WRiley — 30.76°N, 99.41°WRiley — 30.54°N, 99.09°WRiley — 30.49°N, 98.52°WRiley — 30.81°N, 98.37°WRiley — 30.62°N, 98.51°WRiley — 30.90°N, 98.43°WRiley — 30.36°N, 98.47°WZhumabai — 43.53°N, 69.95°E"Dolodrook River Limestone" — 37.60°S, 146.63°EValhallfonna — 79.00°N, 18.00°EValhallfonna — 79.85°N, 17.67°EBestogai — 43.53°N, 69.95°EBestogai — 43.62°N, 69.94°EBestogai — 43.63°N, 69.99°ESarykumy — 46.98°N, 74.13°EEmanuel — 18.65°S, 125.92°EFillmore — 38.87°N, 113.35°WFillmore — 38.78°N, 113.65°WTinu — 17.37°N, 97.17°WTinu — 17.53°N, 97.12°WHouse — 38.88°N, 113.44°WHouse — 39.05°N, 113.38°WHouse — 38.87°N, 113.35°WHouse — 38.70°N, 113.52°WAktas — 43.53°N, 69.95°EDeadwood — 50.69°N, 113.40°WDeadwood — 54.49°N, 105.68°WMalongulli — 33.55°S, 148.85°EMalongulli — 34.00°S, 148.00°EMalongulli — 33.10°S, 148.87°EMalongulli — 33.54°S, 148.89°EMalongulli — 33.56°S, 148.85°EHolm Dal — 82.42°N, 39.75°WGullhögen — 58.38°N, 13.82°EDeadwood — 44.42°N, 103.71°WDeadwood — 47.42°N, 105.59°WDeadwood — 46.87°N, 103.30°WDeadwood — 47.15°N, 110.22°WNopah — 39.00°N, 116.00°WNopah — 40.00°N, 115.00°WNopah — 39.00°N, 115.00°WNopah — 36.32°N, 116.99°WNopah — 36.46°N, 116.77°WShabakty — 43.60°N, 69.45°ECampo Pisano — 39.43°N, 8.48°EÜlgase — 59.43°N, 24.73°EÜlgase — 59.51°N, 25.50°EÜlgase — 59.45°N, 25.67°EÜlgase — 59.49°N, 25.09°EÜlgase — 59.46°N, 24.91°EÜlgase — 59.48°N, 25.34°EÜlgase — 59.43°N, 24.99°EShuijingtuo — 32.53°N, 107.92°EShuijingtuo — 30.75°N, 111.07°EMarjum — 39.00°N, 113.00°WMarjum — 39.36°N, 113.27°WMarjum — 39.27°N, 113.31°WMarjum — 39.45°N, 113.80°WDeh-Molla U16 — 36.36°N, 54.75°ESlandrom — 58.38°N, 13.82°ESlandrom — 58.17°N, 13.53°ESlandrom — 58.45°N, 14.89°ESlandrom — 58.00°N, 13.00°ESlandrom — 58.48°N, 13.10°ESlandrom — 60.92°N, 15.09°E

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The named rock units Acrotretidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 203 further formations hold fewer occurrences each and are not listed. 63 occurrences have no formation on record, which is common for older literature.

Acrotretidae and its relatives

Cambrian

Where Acrotretidae and its relatives were recorded in the Cambrian.

Found in the same rock

1,523 taxa

The Paleobiology Database records 653 sites for Acrotretidae, 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

204 references

Each of the 1,115 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. 192 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 content1

Picture of Acrotretidae

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Acrotretidae 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 itAcrotretoidea through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Schuchert 1893