Isocrinidae

Isocrinidae is one of four extant families of crinoids in the order Isocrinida.

Isocrinidae

DataBase Center for Life Science (DBCLS) · CC BY 4.0 · via Wikipedia/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
IsocrininaPBDB
Diet
suspension feederPBDB
Life habit
upper-level epifaunalPBDB
Motility
stationary, attachedPBDB
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 267 million years on record.

The record covers at least 274.4 Mya to 7.246 Mya. No occurrence read is dated outside 283.3 Mya to 5.333 Mya.

Permian — about 1 of 450 occurrencesPermianEarly Triassic — about 1 of 450 occurrencesMiddle Triassic — about 39 of 450 occurrencesLate Triassic — about 77 of 450 occurrencesLate TriassicEarly Jurassic — about 107 of 450 occurrencesEarly JurassicMiddle Jurassic — about 59 of 450 occurrencesLate Jurassic — about 34 of 450 occurrencesEarly Cretaceous — about 72 of 450 occurrencesEarly CretaceousLate Cretaceous — about 32 of 450 occurrencesLate CretaceousPaleocene — about 1 of 450 occurrencesEocene — about 13 of 450 occurrencesOligocene — about 10 of 450 occurrencesMiocene — about 4 of 450 occurrencesPliocene — about 0 of 450 occurrencesPleistocene — about 0 of 450 occurrences289–279 Mya — about 0.5 occurrences279–270 Mya — about 0.5 occurrences250–241 Mya — about 33 occurrences241–231 Mya — about 46 occurrences231–221 Mya — about 21 occurrences221–212 Mya — about 8 occurrences212–202 Mya — about 8 occurrences202–193 Mya — about 42 occurrences193–183 Mya — about 63 occurrences183–173 Mya — about 4 occurrences173–164 Mya — about 46 occurrences164–154 Mya — about 38 occurrences154–144 Mya — about 7 occurrences144–135 Mya — about 10 occurrences135–125 Mya — about 10 occurrences125–116 Mya — about 11 occurrences116–106 Mya — about 13 occurrences106–96 Mya — about 38 occurrences96–87 Mya — about 15 occurrences87–77 Mya — about 4 occurrences77–67 Mya — about 3 occurrences67–58 Mya — about 2 occurrences58–48 Mya — about 2 occurrences48–39 Mya — about 3 occurrences39–29 Mya — about 15 occurrences29–19 Mya — about 5 occurrences19–9.6 Mya — about 1 occurrence9.6–0 Mya — about 1 occurrence274.4 Mya7.246 Mya289 Mya0 Mya

450 occurrences of Isocrinidae on record, most of them in the Early Jurassic. 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

450 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

89 formations

Red Chalk — 54.15°N, 0.23°WRed Chalk — 53.67°N, 0.50°WQingyan — 26.33°N, 106.68°ECassian — 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 — 51.41°N, 3.17°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 — 45.74°N, 123.27°WKeasey — 44.35°N, 124.10°WKeasey — 45.91°N, 123.20°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 — 11.47°S, 75.68°WChambara — 10.85°S, 76.17°WWilmington Sands — 50.80°N, 0.18°EBilá — 49.98°N, 15.60°ELower Lias — 51.80°N, 1.88°WLiard — 56.16°N, 122.55°WLiard — 56.10°N, 122.87°WGrizzle — 50.80°N, 0.18°EMarnes de Latrecey — 47.98°N, 4.85°ETanohata — 40.09°N, 141.84°EWhitby Mudstone — 54.45°N, 0.57°WNayband — 32.93°N, 52.03°ENayband — 31.15°N, 52.65°ECleveland Ironstone — 54.45°N, 0.57°WHosselkus — 40.85°N, 122.10°WTolo Channel — 22.49°N, 114.32°ETolo Channel — 22.44°N, 114.28°ERed Bluff Tuff — 43.96°S, 176.58°WRed Bluff Tuff — 44.00°S, 176.50°WBaldonnel — 56.05°N, 123.01°WWetterstein — 48.47°N, 20.53°ESign — 18.48°N, 77.58°W

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The named rock units Isocrinidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 65 further formations hold fewer occurrences each and are not listed. 189 occurrences have no formation on record, which is common for older literature.

Isocrinidae and its relatives

Early Jurassic

Where Isocrinidae and its relatives were recorded in the Early Jurassic.

Found in the same rock

2,760 taxa

The Paleobiology Database records 309 sites for Isocrinidae, and this reads 240 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

141 references

Each of the 450 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. 129 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 content1

Picture of Isocrinidae

Credit
DataBase Center for Life Science (DBCLS)
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Isocrinidae 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.

The description on this site

Licence
CC BY-SA 4.0

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

Keep going

What may have been alongside itIsocrinina through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gislén 1924