Palaeacmaea

No picture of Palaeacmaea was found. Wikipedia, Wikidata and Smithsonian Open Access were searched and had none. iDigBio and GBIF were not searched: the Paleobiology Database does not place Palaeacmaea firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed.

On record

Recorded, not inferred
Sits inside
AnimaliaPBDB

Time the record covers

At least 284 million years on record.

The record covers at least 525.5 Mya to 241.464 Mya. No occurrence read is dated outside 538.8 Mya to 237 Mya.

Cambrian — about 5 of 12 occurrencesCambrianOrdovician — about 5 of 12 occurrencesOrdovicianSilurian — about 1 of 12 occurrencesDevonian — about 0 of 12 occurrencesCarboniferous — about 0 of 12 occurrencesPermian — about 0 of 12 occurrencesEarly Triassic — about 0 of 12 occurrencesMiddle Triassic — about 1 of 12 occurrencesLate Triassic — about 0 of 12 occurrences545–534 Mya — about 0.4 occurrences534–524 Mya — about 0.9 occurrences524–513 Mya — about 0.2 occurrences513–503 Mya — about 0.4 occurrences503–493 Mya — about 1 occurrence493–482 Mya — about 3 occurrences472–461 Mya — about 3 occurrences451–440 Mya — about 1 occurrence430–419 Mya — about 1 occurrence252–241 Mya — about 0.0 occurrences241–231 Mya — about 1.0 occurrences525.5 Mya241.464 Mya545 Mya231 Mya

12 occurrences of Palaeacmaea 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

12 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

10 formations

Kandle — 59.42°N, 24.75°EKeeseville — 44.50°N, 73.48°WDresbach — 44.52°N, 89.57°WHoyt Limestone — 43.21°N, 75.46°WGreat Meadows — 43.91°N, 73.42°WVaginatumkalk — 59.42°N, 24.75°EVauréal — 49.92°N, 64.33°WTaozichong — 26.73°N, 106.35°EMarmolata — 46.46°N, 11.85°EPozáry — 50.00°N, 14.34°E

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The named rock units Palaeacmaea has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Palaeacmaea and its relatives

Cambrian

Where Palaeacmaea and its relatives were recorded in the Cambrian.

Found in the same rock

320 taxa

The Paleobiology Database records 12 sites for Palaeacmaea, 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

9 references

Each of the 12 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. 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 Palaeacmaea was found. Wikipedia, Wikidata and Smithsonian Open Access were searched and had none.

iDigBio and GBIF were not searched: the Paleobiology Database does not place Palaeacmaea firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed.

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 itAnimalia through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.