Preptopremnum

No picture of Preptopremnum was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Preptopremnum, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
CrinoideaPBDB
Diet
suspension feederPBDB, for Crinoidea
Life habit
upper-level epifaunalPBDB, for Crinoidea
Motility
stationary, attachedPBDB, for Crinoidea
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 40 million years on record.

The record covers at least 307.4 Mya to 266.9 Mya. No occurrence read is dated outside 309.8 Mya to 264.28 Mya.

Carboniferous — about 2 of 4 occurrencesCarboniferousPermian — about 2 of 4 occurrencesPermian311–309 Mya — about 0.6 occurrences309–308 Mya — about 1 occurrence308–306 Mya — about 0.1 occurrences268–267 Mya — about 0.3 occurrences267–265 Mya — about 1 occurrence265–263 Mya — about 0.5 occurrences307.4 Mya266.9 Mya310.7 Mya263.4 Mya

4 occurrences of Preptopremnum on record, most of them in the Carboniferous. 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

4 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

2 formations

La Joya — 29.37°N, 109.88°WOlinalá — 17.76°N, 98.72°W

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The named rock units Preptopremnum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Preptopremnum and its relatives

Carboniferous

Where Preptopremnum and its relatives were recorded in the Carboniferous.

Found in the same rock

55 taxa

The Paleobiology Database records 2 sites for Preptopremnum, 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

3 references

Each of the 4 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 Preptopremnum was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Preptopremnum, or no answer at all. This entry cannot say which.

No 3D scan of Preptopremnum 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 itCrinoidea through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Moore and Jeffords 1968