Trochodiadema

Trochodiadema

via iDigBio · CC BY · via iDigBio. 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
HemicidaroidaPBDB
Diet
grazerPBDB, for Hemicidaroida
Life habit
low-level epifaunalPBDB, for Hemicidaroida
Motility
slow-movingPBDB, for Hemicidaroida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Hemicidaroida

Time the record covers

At least 12 million years on record.

The record covers at least 113.2 Mya to 100.5 Mya. No occurrence read is dated outside 121.4 Mya to 93.9 Mya.

Early Cretaceous — about 1 of 3 occurrencesEarly CretaceousLate Cretaceous — about 2 of 3 occurrencesLate Cretaceous122–121 Mya — about 0.0 occurrences121–120 Mya — about 0.1 occurrences120–119 Mya — about 0.1 occurrences119–118 Mya — about 0.1 occurrences118–117 Mya — about 0.1 occurrences117–116 Mya — about 0.1 occurrences116–115 Mya — about 0.1 occurrences115–114 Mya — about 0.1 occurrences114–113 Mya — about 0.1 occurrences113–112 Mya — about 0.0 occurrences101–100 Mya — about 0.1 occurrences100–99 Mya — about 0.3 occurrences99–98 Mya — about 0.3 occurrences98–97 Mya — about 0.3 occurrences97–96 Mya — about 0.3 occurrences96–95 Mya — about 0.3 occurrences95–94 Mya — about 0.3 occurrences94–93 Mya — about 0.1 occurrences113.2 Mya100.5 Mya122 Mya93.3 Mya

3 occurrences of Trochodiadema on record. 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

3 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

2 formations

Mauddud — 25.90°N, 56.07°ERisan Aneiza — 31.00°N, 33.50°E

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The named rock units Trochodiadema has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Found in the same rock

17 taxa

The Paleobiology Database records 2 sites for Trochodiadema, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

2 references

Each of the 3 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 Trochodiadema

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Trochodiadema 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.

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

Keep going

What may have been alongside itHemicidaroida through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.