Hemiaster wetherbyi

Hemiaster wetherbyi

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
HemiasterPBDB
Diet
deposit feeder, detritivorePBDB, for Spatangoida
Life habit
shallow infaunalPBDB, for Spatangoida
Motility
slow-movingPBDB, for Spatangoida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Spatangoida

Time the record covers

At least 28 million years on record.

The record covers at least 100.5 Mya to 72.2 Mya. No occurrence read is dated outside 113.2 Mya to 66 Mya.

Early Cretaceous — about 2 of 54 occurrencesEarly CretaceousLate Cretaceous — about 52 of 54 occurrencesLate CretaceousPaleocene — about 0 of 54 occurrences114–113 Mya — about 0.1 occurrences113–111 Mya — about 0.1 occurrences111–109 Mya — about 0.1 occurrences109–108 Mya — about 0.1 occurrences108–106 Mya — about 0.2 occurrences106–104 Mya — about 0.4 occurrences104–103 Mya — about 0.4 occurrences103–101 Mya — about 0.4 occurrences101–99 Mya — about 0.1 occurrences85–83 Mya — about 0.6 occurrences83–81 Mya — about 2 occurrences81–80 Mya — about 2 occurrences80–78 Mya — about 2 occurrences78–77 Mya — about 2 occurrences77–75 Mya — about 2 occurrences75–73 Mya — about 2 occurrences73–72 Mya — about 5 occurrences72–70 Mya — about 10 occurrences70–68 Mya — about 10 occurrences68–67 Mya — about 10 occurrences67–65 Mya — about 4 occurrences100.5 Mya72.2 Mya114.1 Mya65.1 Mya

54 occurrences of Hemiaster wetherbyi on record, most of them in the Late 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

54 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

11 formations

Prairie Bluff — 32.04°N, 87.26°WPrairie Bluff — 32.13°N, 87.40°WPrairie Bluff — 32.43°N, 88.04°WPrairie Bluff — 32.07°N, 87.33°WPrairie Bluff — 33.90°N, 88.98°WPrairie Bluff — 33.46°N, 88.79°WPrairie Bluff — 32.67°N, 88.19°WPrairie Bluff — 34.24°N, 89.00°WPrairie Bluff — 34.05°N, 88.97°WPrairie Bluff — 34.25°N, 88.98°WSaratoga Chalk — 33.97°N, 93.37°WSaratoga Chalk — 34.08°N, 93.12°WSaratoga Chalk — 34.02°N, 93.29°WSaratoga Chalk — 34.04°N, 93.14°WSaratoga Chalk — 33.80°N, 93.70°WSaratoga Chalk — 33.76°N, 93.90°WCorsicana Marl — 29.57°N, 97.96°WCorsicana Marl — 29.37°N, 98.71°WCorsicana Marl — 29.37°N, 98.78°WCorsicana Marl — 29.40°N, 98.63°WCorsicana Marl — 29.59°N, 98.08°WRipley — 32.51°N, 88.01°WRipley — 34.12°N, 88.88°WRipley — 35.32°N, 88.42°WRipley — 34.24°N, 88.91°WNacatoch Sand — 31.31°N, 96.90°WNacatoch Sand — 33.80°N, 93.65°WNacatoch Sand — 33.85°N, 93.61°WOwl Creek — 34.45°N, 89.00°WOwl Creek — 34.23°N, 89.00°WNeylandville Marl — 31.48°N, 96.73°WPrairie Bluff Chalk — 33.96°N, 88.94°WMarlbrook Marl — 34.08°N, 93.14°WIndidura — 29.35°N, 101.05°WPerson — 29.40°N, 98.47°W

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

Hemiaster wetherbyi and its relatives

Late Cretaceous

Where Hemiaster wetherbyi and its relatives were recorded in the Late Cretaceous.

Found in the same rock

449 taxa

The Paleobiology Database records 53 sites for Hemiaster wetherbyi, 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

6 references

Each of the 54 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 Hemiaster wetherbyi

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

No 3D scan of Hemiaster wetherbyi 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 itHemiaster through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. de Loriol 1887