Holectypus

Searched as Holectypus planatus numismalis. The Paleobiology Database treats Holectypus as the accepted name.

Holectypus is an extinct genus of sea urchin. It lived from the Jurassic to the Cretaceous. Fossils have been found all around the world.

Holectypus

via iDigBio · CC0 · 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
HolectypidaePBDB
Diet
detritivorePBDB, for Holectypoida
Life habit
semi-infaunalPBDB, for Holectypoida
Motility
actively mobilePBDB, for Holectypoida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At most 3.1 million years on record.

The one occurrence read is dated to somewhere between 113.2 Mya and 110.1 Mya, which is a dating window rather than a span.

Early Cretaceous — about 1 of 1 occurrenceEarly Cretaceous113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–110 Mya — about 0.0 occurrences110–110 Mya — about 0.0 occurrences110–110 Mya — about 0.0 occurrences110–110 Mya — about 0.0 occurrences113.7 Mya109.6 Mya

1 occurrence of Holectypus on record, most of them in the Early Cretaceous. 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

1 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

1 formation

Crisnejas — 6.87°S, 78.15°W

Loading coastlines…

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

Holectypus and its relatives

Early Cretaceous

Where Holectypus and its relatives were recorded in the Early Cretaceous.

Found in the same rock

649 taxa

The Paleobiology Database records 80 sites for Holectypus, 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

1 reference

Each of the 1 occurrence 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content2

Picture of Holectypus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

Smithsonian Open Access was 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 itHolectypidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.