Exaesiodiscus

Exaesiodiscus

Moore, Raymond C.; Jeffords, Russell M.; Hattin, Donald E. · CC BY 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
ExaesiodiscidaePBDB
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 70 million years on record.

The record covers at least 449.9 Mya to 379 Mya. No occurrence read is dated outside 452.8 Mya to 372.15 Mya.

Ordovician — about 1 of 4 occurrencesOrdovicianSilurian — about 1 of 4 occurrencesSilurianDevonian — about 2 of 4 occurrencesDevonian454–452 Mya — about 0.4 occurrences452–449 Mya — about 0.6 occurrences429–426 Mya — about 0.0 occurrences426–424 Mya — about 0.4 occurrences424–421 Mya — about 0.4 occurrences421–418 Mya — about 0.2 occurrences385–382 Mya — about 0.2 occurrences382–379 Mya — about 0.8 occurrences379–376 Mya — about 0.4 occurrences376–373 Mya — about 0.4 occurrences373–371 Mya — about 0.2 occurrences449.9 Mya379 Mya454 Mya371 Mya

4 occurrences of Exaesiodiscus on record, most of them in the Devonian. 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

3 formations

Baital — 51.00°N, 94.00°ESolonchatskaya — 51.77°N, 59.10°EGorayivskaya — 48.57°N, 27.03°E

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The named rock units Exaesiodiscus 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.

Exaesiodiscus and its relatives

Devonian

Where Exaesiodiscus and its relatives were recorded in the Devonian.

Found in the same rock

84 taxa

The Paleobiology Database records 3 sites for Exaesiodiscus, 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

4 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 content1

Picture of Exaesiodiscus

Source
GBIF
Credit
Moore, Raymond C.; Jeffords, Russell M.; Hattin, Donald E.
Licence
CC BY 4.0
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 itExaesiodiscidae through timeFormations of the DevonianThe world it lived on

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