Allorisma

Searched as Allorisma granosum. The Paleobiology Database treats Allorisma as the accepted name.

Allorisma

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
EdmondiidaePBDB
Diet
suspension feederPBDB, for Pholadomyida
Life habit
infaunalPBDB, for Pholadomyida
Motility
facultatively mobilePBDB, for Pholadomyida
Vision
blindPBDB, for Bivalvia

Time the record covers

At most 2.3 million years on record.

Every occurrence read is dated to somewhere between 306 Mya and 303.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Carboniferous — about 3 of 3 occurrencesCarboniferous306–306 Mya — about 0.1 occurrences306–306 Mya — about 0.1 occurrences306–306 Mya — about 0.1 occurrences306–306 Mya — about 0.1 occurrences306–306 Mya — about 0.1 occurrences306–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–305 Mya — about 0.1 occurrences305–304 Mya — about 0.1 occurrences304–304 Mya — about 0.1 occurrences304–304 Mya — about 0.1 occurrences304–304 Mya — about 0.1 occurrences304–304 Mya — about 0.1 occurrences304–304 Mya — about 0.1 occurrences304–304 Mya — about 0.1 occurrences304–304 Mya — about 0.1 occurrences306.5 Mya303.2 Mya

3 occurrences of Allorisma on record, most of them in the Carboniferous. 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

Douglas — 39.01°N, 95.25°WDouglas — 39.04°N, 95.39°WPottawatomie — 39.10°N, 94.57°W

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

Allorisma and its relatives

Carboniferous

Where Allorisma and its relatives were recorded in the Carboniferous.

Found in the same rock

1,115 taxa

The Paleobiology Database records 63 sites for Allorisma, 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 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Allorisma

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

No 3D scan of Allorisma 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 itEdmondiidae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. King 1844