Ceratretidae

Keyserlingia buchii (deVerneuil, 1845), a relative of Ceratretidae — not Ceratretidae itself

Not Ceratretidae. This is Keyserlingia buchii (deVerneuil, 1845), a relative — both are Ceratretidae.

via GBIF · CC BY-NC 4.0 · via GBIF. 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 36 million years on record.

The record covers at least 508.2 Mya to 471.3 Mya. No occurrence read is dated outside 538.8 Mya to 469.4 Mya.

Cambrian — about 45 of 51 occurrencesCambrianOrdovician — about 6 of 51 occurrencesOrdovician540–538 Mya — about 0.1 occurrences538–535 Mya — about 0.2 occurrences535–533 Mya — about 0.2 occurrences533–531 Mya — about 0.2 occurrences531–528 Mya — about 0.2 occurrences528–526 Mya — about 0.2 occurrences526–523 Mya — about 0.2 occurrences523–521 Mya — about 0.2 occurrences521–519 Mya — about 0.2 occurrences519–516 Mya — about 0.2 occurrences516–514 Mya — about 0.7 occurrences514–511 Mya — about 1 occurrence511–509 Mya — about 1 occurrence509–507 Mya — about 2 occurrences507–504 Mya — about 2 occurrences504–502 Mya — about 2 occurrences502–499 Mya — about 2 occurrences499–497 Mya — about 2 occurrences497–494 Mya — about 11 occurrences494–492 Mya — about 8 occurrences492–490 Mya — about 6 occurrences490–487 Mya — about 5 occurrences487–485 Mya — about 3 occurrences485–482 Mya — about 2 occurrences482–480 Mya — about 0.0 occurrences480–478 Mya — about 0.0 occurrences478–475 Mya — about 0.0 occurrences473–470 Mya — about 0.5 occurrences470–468 Mya — about 0.5 occurrences508.2 Mya471.3 Mya540 Mya468 Mya

51 occurrences of Ceratretidae 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

51 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

16 formations

Ülgase — 59.43°N, 24.73°EÜlgase — 59.46°N, 24.91°EÜlgase — 59.48°N, 25.02°EÜlgase — 59.48°N, 25.34°EÜlgase — 59.51°N, 25.50°EÜlgase — 59.45°N, 25.67°EÜlgase — 59.34°N, 26.52°EÜlgase — 59.49°N, 25.09°EÜlgase — 59.43°N, 24.99°EAlum Shale — 58.38°N, 14.70°EAlum Shale — 60.98°N, 15.20°EAlum Shale — 58.52°N, 15.45°ELadoga — 60.14°N, 32.56°ELadoga — 59.73°N, 30.45°EStephen — 51.34°N, 116.37°WJbel Wawrmast — 30.75°N, 6.58°WJbel Wawrmast — 32.23°N, 6.13°WSnowy Range — 47.15°N, 110.22°WCoonigan — 31.17°S, 141.32°EExsulans Limestone — 55.52°N, 14.35°EChingiztau — 49.41°N, 79.14°EKaragajly — 42.85°N, 76.05°ETourmakeady — 53.69°N, 9.37°WMaardu — 59.34°N, 26.52°EKallavere — 59.49°N, 25.09°ETsitre — 59.51°N, 25.50°EJince — 49.96°N, 13.74°ESablinskaya — 59.69°N, 30.88°E

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The named rock units Ceratretidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 occurrences have no formation on record, which is common for older literature.

Ceratretidae and its relatives

Cambrian

Where Ceratretidae and its relatives were recorded in the Cambrian.

Found in the same rock

211 taxa

The Paleobiology Database records 50 sites for Ceratretidae, 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

14 references

Each of the 51 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. 2 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 Keyserlingia buchii (deVerneuil, 1845)

Source
GBIF
Credit
via GBIF
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow it

No 3D scan of Ceratretidae was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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. Rowell 1965