Acrotreta

Acrotreta

via iDigBio · CC0 · 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
AcrotretidaePBDB
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 60 million years on record.

The record covers at least 509.7 Mya to 449.4 Mya. No occurrence read is dated outside 515.3 Mya to 445.2 Mya.

Cambrian — about 43 of 95 occurrencesCambrianOrdovician — about 52 of 95 occurrencesOrdovician517–514 Mya — about 0.4 occurrences514–512 Mya — about 0.9 occurrences512–509 Mya — about 1 occurrence509–507 Mya — about 4 occurrences507–505 Mya — about 6 occurrences505–502 Mya — about 4 occurrences502–500 Mya — about 5 occurrences500–497 Mya — about 4 occurrences497–495 Mya — about 3 occurrences495–492 Mya — about 5 occurrences492–490 Mya — about 5 occurrences490–488 Mya — about 3 occurrences488–485 Mya — about 6 occurrences485–483 Mya — about 9 occurrences483–480 Mya — about 8 occurrences480–478 Mya — about 7 occurrences478–475 Mya — about 4 occurrences475–473 Mya — about 4 occurrences473–471 Mya — about 4 occurrences471–468 Mya — about 2 occurrences468–466 Mya — about 0.4 occurrences466–463 Mya — about 0.4 occurrences463–461 Mya — about 0.4 occurrences461–458 Mya — about 0.8 occurrences458–456 Mya — about 4 occurrences456–454 Mya — about 2 occurrences454–451 Mya — about 0.8 occurrences451–449 Mya — about 0.5 occurrences449–446 Mya — about 0.9 occurrences446–444 Mya — about 0.4 occurrences509.7 Mya449.4 Mya517 Mya444 Mya

95 occurrences of Acrotreta on record, most of them in the Ordovician. 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

95 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

52 formations

Deadwood — 44.42°N, 103.71°WDeadwood — 47.42°N, 105.59°WDeadwood — 46.87°N, 103.30°WDeadwood — 47.15°N, 110.22°WGola Beds — 22.49°S, 140.46°EDeh-Molla U16 — 36.36°N, 54.75°ELeetse — 59.63°N, 30.80°ELeetse — 59.88°N, 31.59°ETrenice — 50.00°N, 14.00°ETrenice — 49.78°N, 13.68°ELangston — 42.20°N, 112.25°WLangston — 42.32°N, 111.45°WMt. Whyte — 51.42°N, 116.45°WMt. Whyte — 50.90°N, 115.62°WMarjum — 39.45°N, 113.80°WKlabava — 50.00°N, 14.00°EKlabava — 49.75°N, 13.80°EMiaopo — 33.00°N, 111.00°EYeli — 40.00°N, 118.00°EYeli — 39.00°N, 118.00°EKlonowka Shale — 50.88°N, 20.95°ELower Alum Shale — 55.00°N, 15.00°ELead Bell Shale — 42.00°N, 112.00°WFillmore Limestone — 38.92°N, 113.36°WFillmore Limestone — 38.79°N, 113.64°WAkbulaksai — 50.45°N, 57.73°EMenevia — 51.87°N, 5.22°WBreadstone Shales — 51.71°N, 2.42°WBreadstone Shales — 51.71°N, 2.45°WLas Plantas — 29.65°S, 68.64°WSchodack — 42.53°N, 73.69°WMount Whyte — 52.83°N, 119.25°WUte — 42.19°N, 112.25°WWheeler Shale — 39.36°N, 111.59°WFranconia — 44.52°N, 89.57°W

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The named rock units Acrotreta has been recovered from, largest first. Drawn where the rock is now, not where it formed. 28 further formations hold fewer occurrences each and are not listed. 3 occurrences have no formation on record, which is common for older literature.

Acrotreta and its relatives

Ordovician

Where Acrotreta and its relatives were recorded in the Ordovician.

Found in the same rock

776 taxa

The Paleobiology Database records 91 sites for Acrotreta, 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

57 references

Each of the 95 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. 45 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 Acrotreta

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAcrotretidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Kutorga 1848)