Pentacrinites

Pentacrinites is an extinct genus of crinoids that lived from the Hettangian to the Bathonian of Asia, Europe, North America, and New Zealand. Their stems are pentagonal to star-shaped in cross-section and are the most commonly preserved parts. Pentacrinites are commonly found in the Pentacrinites Bed of the Early Jurassic of Lyme Regis, Dorset, England. Pentacrinites can be recognized by the extensions all around the stem, which are long, unbranching, and of increasing length further down, the very small cup and 5 long freely branching arms.

A picture published with the record for Pentacrinites.

NobuTamura email:nobu.tamura@yahoo.com www.palaeocritti.com · CC BY-SA 3.0 · 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
PentacrinitidaePBDB
Diet
suspension feederPBDB, for Isocrinida
Life habit
epifaunalPBDB, for Isocrinida
Motility
stationaryPBDB, for Isocrinida
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 205 million years on record.

The record covers at least 243.43 Mya to 37.71 Mya. No occurrence read is dated outside 251.902 Mya to 33.9 Mya.

Permian — about 0 of 152 occurrencesEarly Triassic — about 0 of 152 occurrencesMiddle Triassic — about 10 of 152 occurrencesLate Triassic — about 24 of 152 occurrencesLate TriassicEarly Jurassic — about 55 of 152 occurrencesEarly JurassicMiddle Jurassic — about 22 of 152 occurrencesLate Jurassic — about 19 of 152 occurrencesEarly Cretaceous — about 10 of 152 occurrencesEarly CretaceousLate Cretaceous — about 5 of 152 occurrencesLate CretaceousPaleocene — about 4 of 152 occurrencesEocene — about 3 of 152 occurrencesEoceneOligocene — about 0 of 152 occurrences256–249 Mya — about 0.1 occurrences249–241 Mya — about 4 occurrences241–234 Mya — about 10 occurrences234–226 Mya — about 6 occurrences226–218 Mya — about 3 occurrences218–211 Mya — about 3 occurrences211–203 Mya — about 6 occurrences203–196 Mya — about 16 occurrences196–188 Mya — about 17 occurrences188–181 Mya — about 18 occurrences181–173 Mya — about 9 occurrences173–166 Mya — about 14 occurrences166–158 Mya — about 10 occurrences158–150 Mya — about 7 occurrences150–143 Mya — about 8 occurrences143–135 Mya — about 2 occurrences135–128 Mya — about 5 occurrences128–120 Mya — about 2 occurrences120–113 Mya — about 0.2 occurrences113–105 Mya — about 0.8 occurrences105–98 Mya — about 0.6 occurrences98–90 Mya — about 0.2 occurrences90–82 Mya — about 0.5 occurrences82–75 Mya — about 2 occurrences75–67 Mya — about 2 occurrences67–60 Mya — about 2 occurrences60–52 Mya — about 2 occurrences45–37 Mya — about 2 occurrences37–30 Mya — about 1 occurrence243.43 Mya37.71 Mya256 Mya30 Mya

152 occurrences of Pentacrinites 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

152 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

54 formations

Kap Leslie — 70.48°N, 21.97°WCalcari Oolitici di S. Vigilio — 45.75°N, 11.13°EWhitby Mudstone — 54.45°N, 0.57°WLautaro — 29.11°S, 70.30°WLautaro — 29.43°S, 70.13°WLautaro — 28.13°S, 69.96°WLautaro — 27.70°S, 69.61°WTwin Creek Limestone — 41.90°N, 110.40°WTwin Creek Limestone — 42.14°N, 111.22°WTwin Creek Limestone — 43.66°N, 111.33°WCassian — 46.55°N, 11.93°ECassian — 46.51°N, 11.76°EMuschelkalk — 38.42°N, 0.65°WVincentown — 39.97°N, 74.68°WPit — 40.76°N, 122.32°WPit — 40.85°N, 122.10°WOxford Clay — 53.50°N, 0.33°WOxford Clay — 51.75°N, 1.18°WChari — 23.50°N, 70.50°EConway — 42.58°S, 173.49°EConway — 42.81°S, 173.28°ELower Lias — 51.80°N, 1.88°WSierra Fraga — 26.99°S, 69.59°WSierra Fraga — 26.91°S, 69.57°WLias — 51.40°N, 2.46°WCaleta Lígate — 20.00°S, 70.08°WCaleta Lígate — 20.40°S, 70.09°WZone de Pierre jaune — 47.05°N, 7.08°EHambleton Oolite — 54.21°N, 0.29°WWest Walton — 52.18°N, 0.12°EPatcham — 23.52°N, 69.00°EBroccatello — 45.87°N, 8.93°EBraunjura alpha & Braunjura beta — 48.90°N, 7.67°ECold Fish Volcanics — 57.50°N, 128.90°WAlcobaça — 39.55°N, 8.98°W

Loading coastlines…

The named rock units Pentacrinites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 30 further formations hold fewer occurrences each and are not listed. 68 occurrences have no formation on record, which is common for older literature.

Pentacrinites and its relatives

Early Jurassic

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

Found in the same rock

2,099 taxa

The Paleobiology Database records 136 sites for Pentacrinites, 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

98 references

Each of the 152 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. 86 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 Pentacrinites

Credit
NobuTamura email:nobu.tamura@yahoo.com www.palaeocritti.com
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan is on file for Pentacrinites.

This entry was cached before the site began recording what Smithsonian Open Access, MorphoSource and Sketchfab did, so a search that failed cannot be told from one that found nothing.

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 itPentacrinitidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Blumenbach 1804