Isocrinus

Isocrinus

Wilson44691 · Public Domain · via Wikidata/Commons. 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
IsocrininaePBDB
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 223 million years on record.

The record covers at least 247 Mya to 23.04 Mya. No occurrence read is dated outside 248.6 Mya to 15.98 Mya.

Permian — about 0 of 252 occurrencesEarly Triassic — about 1 of 252 occurrencesMiddle Triassic — about 9 of 252 occurrencesLate Triassic — about 55 of 252 occurrencesLate TriassicEarly Jurassic — about 42 of 252 occurrencesEarly JurassicMiddle Jurassic — about 28 of 252 occurrencesLate Jurassic — about 8 of 252 occurrencesEarly Cretaceous — about 60 of 252 occurrencesEarly CretaceousLate Cretaceous — about 32 of 252 occurrencesLate CretaceousPaleocene — about 1 of 252 occurrencesEocene — about 6 of 252 occurrencesEoceneOligocene — about 8 of 252 occurrencesMiocene — about 1 of 252 occurrences253–245 Mya — about 1 occurrence245–237 Mya — about 9 occurrences237–229 Mya — about 31 occurrences229–221 Mya — about 9 occurrences221–213 Mya — about 7 occurrences213–205 Mya — about 5 occurrences205–197 Mya — about 20 occurrences197–189 Mya — about 15 occurrences189–181 Mya — about 9 occurrences181–173 Mya — about 2 occurrences173–165 Mya — about 22 occurrences165–156 Mya — about 9 occurrences156–148 Mya — about 5 occurrences140–132 Mya — about 6 occurrences132–124 Mya — about 3 occurrences124–116 Mya — about 8 occurrences116–108 Mya — about 10 occurrences108–100 Mya — about 34 occurrences100–92 Mya — about 18 occurrences92–84 Mya — about 6 occurrences84–76 Mya — about 4 occurrences76–68 Mya — about 3 occurrences68–60 Mya — about 2 occurrences60–52 Mya — about 2 occurrences44–36 Mya — about 2 occurrences36–27 Mya — about 9 occurrences27–19 Mya — about 2 occurrences19–11 Mya — about 0.5 occurrences247 Mya23.04 Mya253 Mya11 Mya

252 occurrences of Isocrinus on record, most of them in the Early Cretaceous. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

252 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

61 formations

Red Chalk — 54.15°N, 0.23°WRed Chalk — 53.67°N, 0.50°WCassian — 46.64°N, 12.20°ECassian — 46.52°N, 11.96°ECassian — 46.53°N, 11.92°ECassian — 46.68°N, 12.15°ECassian — 46.54°N, 11.62°ECassian — 46.51°N, 11.76°ECassian — 46.60°N, 12.26°EBlue Lias — 50.00°N, 2.00°WBlue Lias — 51.00°N, 3.00°WBlue Lias — 51.90°N, 2.22°WBlue Lias — 50.71°N, 2.96°WKeasey — 45.77°N, 123.24°WKeasey — 46.00°N, 123.26°WKeasey — 45.72°N, 123.20°WKeasey — 44.35°N, 124.10°WLuning — 38.87°N, 117.62°WLuning — 38.43°N, 118.05°WLuning — 38.43°N, 118.12°WHiraiga — 40.09°N, 141.84°EHiraiga — 39.83°N, 141.99°EChambara — 6.43°S, 79.83°WChambara — 10.85°S, 75.98°WChambara — 10.85°S, 76.17°WWilmington Sands — 50.80°N, 0.18°EBilá — 49.98°N, 15.60°ELiard — 56.16°N, 122.55°WLiard — 56.10°N, 122.87°WGrizzle — 50.80°N, 0.18°ETanohata — 40.09°N, 141.84°ELower Lias — 51.80°N, 1.88°WHosselkus — 40.85°N, 122.10°WNayband — 32.93°N, 52.03°ENayband — 31.15°N, 52.65°ERed Bluff Tuff — 43.96°S, 176.58°WRed Bluff Tuff — 44.00°S, 176.50°WWetterstein — 48.47°N, 20.53°ECedar — 40.79°N, 121.99°WCedar — 40.02°N, 121.12°WRaibl — 47.41°N, 11.12°ERaibl — 47.45°N, 11.11°ESandgate — 51.23°N, 0.58°WMunday’s Hill Phosphatic Sandstone — 51.92°N, 0.67°WCraie de Villedieu — 45.00°N, 0.37°EWest Walton — 52.18°N, 0.12°EPatcham — 23.52°N, 69.00°E

Loading coastlines…

The named rock units Isocrinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 37 further formations hold fewer occurrences each and are not listed. 74 occurrences have no formation on record, which is common for older literature.

Isocrinus and its relatives

Early Cretaceous

Where Isocrinus and its relatives were recorded in the Early Cretaceous.

Found in the same rock

2,710 taxa

The Paleobiology Database records 195 sites for Isocrinus, 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

96 references

Each of the 252 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. 84 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 content2

Picture of Isocrinus

Credit
Wilson44691
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Credit
Steinkern
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

This is what the site found, which is not the same as what exists.

Keep going

Everything alive alongside itIsocrininae through timeFormations of the Early CretaceousThe world it lived on

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