Holaster simplex

Holaster simplex

via iDigBio · CC BY-SA · 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
HolasterPBDB
Diet
detritivorePBDB, for Holasteroida
Life habit
semi-infaunalPBDB, for Holasteroida
Motility
actively mobilePBDB, for Holasteroida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Holasteroida

Time the record covers

At most 5.8 million years on record.

Every occurrence read is dated to somewhere between 106.3 Mya and 100.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Cretaceous — about 2 of 2 occurrencesEarly CretaceousLate Cretaceous — about 0 of 2 occurrences106–106 Mya — about 0.1 occurrences106–106 Mya — about 0.1 occurrences106–106 Mya — about 0.1 occurrences106–105 Mya — about 0.1 occurrences105–105 Mya — about 0.1 occurrences105–105 Mya — about 0.1 occurrences105–105 Mya — about 0.1 occurrences105–105 Mya — about 0.1 occurrences105–104 Mya — about 0.1 occurrences104–104 Mya — about 0.1 occurrences104–104 Mya — about 0.1 occurrences104–104 Mya — about 0.1 occurrences104–103 Mya — about 0.1 occurrences103–103 Mya — about 0.1 occurrences103–103 Mya — about 0.1 occurrences103–103 Mya — about 0.1 occurrences103–102 Mya — about 0.1 occurrences102–102 Mya — about 0.1 occurrences102–102 Mya — about 0.1 occurrences102–102 Mya — about 0.1 occurrences102–102 Mya — about 0.1 occurrences102–101 Mya — about 0.1 occurrences101–101 Mya — about 0.1 occurrences101–101 Mya — about 0.1 occurrences101–101 Mya — about 0.1 occurrences101–100 Mya — about 0.1 occurrences106.8 Mya100 Mya

2 occurrences of Holaster simplex 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

2 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

Denison — 32.79°N, 97.32°WDuck Creek — 33.90°N, 96.65°W

Loading coastlines…

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

Holaster simplex and its relatives

Early Cretaceous

Where Holaster simplex and its relatives were recorded in the Early Cretaceous.

Found in the same rock

38 taxa

The Paleobiology Database records 2 sites for Holaster simplex, 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

2 references

Each of the 2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content2

Picture of Holaster simplex

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

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itHolaster through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Shumard 1853