Hypodiadema

Hypodiadema

Diego Delso · CC BY-SA 4.0 · 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
PseudodiadematidaePBDB
Diet
grazer, deposit feederPBDB, for Echinoidea
Life habit
epifaunalPBDB, for Echinoidea
Motility
actively mobilePBDB, for Echinoidea
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 58 million years on record.

The record covers at least 201.4 Mya to 143.1 Mya. No occurrence read is dated outside 205.7 Mya to 66 Mya.

Late Triassic — about 1 of 5 occurrencesEarly Jurassic — about 2 of 5 occurrencesEarly JurassicMiddle Jurassic — about 1 of 5 occurrencesMiddle JurassicLate Jurassic — about 0 of 5 occurrencesEarly Cretaceous — about 1 of 5 occurrencesEarly CretaceousLate Cretaceous — about 0 of 5 occurrencesLate CretaceousPaleocene — about 0 of 5 occurrences208–204 Mya — about 0.5 occurrences204–199 Mya — about 0.6 occurrences199–194 Mya — about 0.2 occurrences194–189 Mya — about 0.2 occurrences189–184 Mya — about 0.2 occurrences184–179 Mya — about 1 occurrence179–175 Mya — about 0.2 occurrences170–165 Mya — about 1 occurrence146–141 Mya — about 0.0 occurrences141–136 Mya — about 0.1 occurrences136–131 Mya — about 0.1 occurrences131–126 Mya — about 0.1 occurrences126–121 Mya — about 0.1 occurrences121–116 Mya — about 0.1 occurrences116–112 Mya — about 0.1 occurrences112–107 Mya — about 0.1 occurrences107–102 Mya — about 0.1 occurrences102–97 Mya — about 0.1 occurrences97–92 Mya — about 0.1 occurrences92–87 Mya — about 0.1 occurrences87–83 Mya — about 0.1 occurrences83–78 Mya — about 0.1 occurrences78–73 Mya — about 0.1 occurrences73–68 Mya — about 0.1 occurrences68–63 Mya — about 0.0 occurrences201.4 Mya143.1 Mya208 Mya63 Mya

5 occurrences of Hypodiadema 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

5 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

Dhruma — 24.23°N, 46.58°EUanei — 3.10°N, 43.65°ETrinity — 34.06°N, 93.74°W

Loading coastlines…

The named rock units Hypodiadema has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Hypodiadema and its relatives

Early Jurassic

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

Found in the same rock

63 taxa

The Paleobiology Database records 5 sites for Hypodiadema, 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

5 references

Each of the 5 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 Hypodiadema

Credit
Diego Delso
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Hypodiadema 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 itPseudodiadematidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Desor 1858