Diadematidae

The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow.Astropyga Gray, 1825 Astropyga radiata, extant Astropyga pulvinata, extant Astropyga magnifica, extant Centrostephanus Peters, 1855 Centrostephanus asteriscus, extant Centrostephanus coronatus, extant Centrostephanus fragile, Santonian, Maastrichtian, Danian Centrostephanus longispinus, extant Centrostephanus nitidus, extant Centrostephanus rodgersii, extant Chaetodiadema Mortensen, 1903 Chaetodiadema granulatum, extant Chaetodiadema keiense, extant Chaetodiadema tuberculatum, extant Diadema Gray, 1825 Diadema palmeri, extant Diadema savignyi, extant Diadema setosum, extant Diadema antillarum, extant Diadema paucispinum, extant Diadema mexicanum, extant Diadema ascensionis, extant Echinodiadema Verrill, 1867 Echinodiadema coronata, extant Echinothrix Peters, 1853 Echinothrix calamaris, extant Echinothrix diadema, extant Eodiadema, Lower Jurassic Eremopyga Agassiz & Clark, 1908 Eremopyga denudata, extant Goniodiadema Mortensen, 1939 Goniodiadema mauritiense, extant Kamptosoma Mortensen, 1903, extant Palaeodiadema, Santonian, Maastrichtian, Danian Pedinothuria Louis, 1897 Pedinothuria cidaroides, Callovian, Oxfordian

Diadematidae

Frédéric Ducarme · CC BY-SA 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
DiadematoidaPBDB
Diet
grazerPBDB, for Diadematoida
Life habit
low-level epifaunalPBDB, for Diadematoida
Motility
slow-movingPBDB, for Diadematoida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 241 million years on record.

The record covers at least 241.464 Mya to 129 ka. No occurrence read is dated outside 251.902 Mya to 11.7 ka.

Permian — about 0 of 29 occurrencesEarly Triassic — about 0 of 29 occurrencesMiddle Triassic — about 1 of 29 occurrencesLate Triassic — about 3 of 29 occurrencesLate TriassicEarly Jurassic — about 3 of 29 occurrencesEarly JurassicMiddle Jurassic — about 1 of 29 occurrencesLate Jurassic — about 1 of 29 occurrencesEarly Cretaceous — about 4 of 29 occurrencesEarly CretaceousLate Cretaceous — about 5 of 29 occurrencesLate CretaceousPaleocene — about 0 of 29 occurrencesEocene — about 1 of 29 occurrencesEoceneOligocene — about 2 of 29 occurrencesMiocene — about 4 of 29 occurrencesPliocene — about 1 of 29 occurrencesPleistocene — about 3 of 29 occurrences257–248 Mya — about 0.1 occurrences248–240 Mya — about 1 occurrence240–231 Mya — about 1 occurrence231–223 Mya — about 0.4 occurrences223–214 Mya — about 0.6 occurrences214–206 Mya — about 0.6 occurrences206–197 Mya — about 1 occurrence197–188 Mya — about 0.5 occurrences188–180 Mya — about 1 occurrence171–163 Mya — about 0.7 occurrences163–154 Mya — about 1 occurrence128–120 Mya — about 1 occurrence120–111 Mya — about 2 occurrences111–103 Mya — about 0.7 occurrences103–94 Mya — about 0.8 occurrences94–86 Mya — about 1 occurrence86–77 Mya — about 0.6 occurrences77–69 Mya — about 2 occurrences69–60 Mya — about 0.8 occurrences60–51 Mya — about 0.6 occurrences51–43 Mya — about 0.4 occurrences34–26 Mya — about 2 occurrences26–17 Mya — about 2 occurrences17–8.6 Mya — about 0.9 occurrences8.6–0 Mya — about 6 occurrences241.464 Mya129 ka257 Mya0 Mya

29 occurrences of Diadematidae on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group. 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

29 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

16 formations

Pluto Glacier — 71.56°S, 68.22°WPluto Glacier — 71.32°S, 68.31°WPluto Glacier — 71.33°S, 68.42°WGulpen — 50.73°N, 5.67°EMaastricht — 50.86°N, 5.79°EQingyan — 26.33°N, 106.68°EAtherfield Clay — 50.61°N, 1.36°WBrèches rouges de Carboneras — 37.60°N, 1.32°WWhite Chalk — 54.52°N, 13.63°ECraie d'Eletot — 49.77°N, 0.42°ECassian — 46.53°N, 11.92°EFalmouth — 18.47°N, 77.40°WAlzey — 49.83°N, 7.72°EAuradu — 10.38°N, 45.17°ESt-Ursanne — 47.37°N, 7.17°EUpper Lias — 51.80°N, 1.88°WRyukyu Limestone — 25.94°N, 131.31°EMariposa — 38.96°N, 120.94°W

Loading coastlines…

The named rock units Diadematidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 occurrences have no formation on record, which is common for older literature.

Diadematidae and its relatives

Late Cretaceous

Where Diadematidae and its relatives were recorded in the Late Cretaceous.

Found in the same rock

909 taxa

The Paleobiology Database records 27 sites for Diadematidae, 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

26 references

Each of the 29 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. 14 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 Diadematidae

Credit
Frédéric Ducarme
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Diadematidae 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 itDiadematoida through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1855