Isocrinus (Chladocrinus)

Isocrinus (Chladocrinus)

Kurt Meiers · CC0 · 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
IsocrinusPBDB
Diet
suspension feederPBDB, for Isocrinidae
Life habit
upper-level epifaunalPBDB, for Isocrinidae
Motility
stationary, attachedPBDB, for Isocrinidae
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 64 million years on record.

The record covers at least 184.2 Mya to 119.57 Mya. No occurrence read is dated outside 199.5 Mya to 113.2 Mya.

Early Jurassic — about 11 of 20 occurrencesEarly JurassicMiddle Jurassic — about 1 of 20 occurrencesMiddle JurassicLate Jurassic — about 0 of 20 occurrencesEarly Cretaceous — about 8 of 20 occurrencesEarly Cretaceous201–198 Mya — about 0.1 occurrences198–195 Mya — about 0.2 occurrences195–192 Mya — about 0.8 occurrences192–189 Mya — about 3 occurrences189–186 Mya — about 3 occurrences186–183 Mya — about 3 occurrences183–180 Mya — about 0.4 occurrences180–177 Mya — about 0.1 occurrences177–174 Mya — about 0.1 occurrences174–171 Mya — about 0.1 occurrences171–168 Mya — about 0.0 occurrences165–162 Mya — about 0.8 occurrences162–159 Mya — about 0.2 occurrences120–117 Mya — about 3 occurrences117–114 Mya — about 4 occurrences114–111 Mya — about 2 occurrences184.2 Mya119.57 Mya201 Mya111 Mya

20 occurrences of Isocrinus (Chladocrinus) on record, most of them in the Early Jurassic. 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

20 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

Hiraiga — 40.09°N, 141.84°EHiraiga — 39.83°N, 141.99°ELower Lias — 51.80°N, 1.88°WWhitby Mudstone — 54.45°N, 0.57°W

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The named rock units Isocrinus (Chladocrinus) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Isocrinus (Chladocrinus) and its relatives

Early Jurassic

Where Isocrinus (Chladocrinus) and its relatives were recorded in the Early Jurassic.

Found in the same rock

115 taxa

The Paleobiology Database records 19 sites for Isocrinus (Chladocrinus), 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

7 references

Each of the 20 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 Isocrinus (Chladocrinus)

Source
GBIF
Credit
Kurt Meiers
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Isocrinus (Chladocrinus) 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 itIsocrinus through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1836