Isognomon radiatus

Isognomon radiatus, the radial purse oyster or Lister's tree oyster, is a species of bivalve mollusc in the family Isognomonidae. It can be found along the Atlantic coast of North America, ranging from southern Florida to Brazil and Bermuda.

Isognomon radiatus

Anton, 1838 · CC0 · via Wikipedia/Commons. 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
IsognomonPBDB
Diet
suspension feederPBDB, for Isognomon
Life habit
epifaunalPBDB, for Isognomon
Motility
stationary, attachedPBDB, for Isognomon
Vision
blindPBDB, for Bivalvia
Environment
marine,brackishPBDB, for Ostreida

Time the record covers

At least 20 million years on record.

The record covers at least 20.45 Mya to 129 ka. No occurrence read is dated outside 23.04 Mya to 11.7 ka.

Oligocene — about 0 of 5 occurrencesMiocene — about 3 of 5 occurrencesMiocenePliocene — about 0 of 5 occurrencesPleistocene — about 2 of 5 occurrencesPleistocene24–23 Mya — about 0.1 occurrences23–22 Mya — about 0.3 occurrences22–21 Mya — about 0.3 occurrences21–20 Mya — about 0.3 occurrences16–16 Mya — about 0.1 occurrences16–15 Mya — about 0.4 occurrences15–14 Mya — about 0.4 occurrences14–13 Mya — about 0.4 occurrences13–13 Mya — about 0.4 occurrences13–12 Mya — about 0.4 occurrences12–11 Mya — about 0.1 occurrences785 ka–0 Mya — about 2 occurrences20.45 Mya129 ka23.5 Mya0 Mya

5 occurrences of Isognomon radiatus on record, most of them in the Miocene. The Paleobiology Database records this as a living group. 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

5 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

5 formations

Weglinek — 50.72°N, 21.95°ELychow — 50.69°N, 22.03°EBermont — 26.68°N, 80.67°WFalmouth — 18.47°N, 77.45°WFalun de Sainte-Avit — 43.91°N, 0.66°W

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

Isognomon radiatus and its relatives

Miocene

Where Isognomon radiatus and its relatives were recorded in the Miocene.

Found in the same rock

381 taxa

The Paleobiology Database records 4 sites for Isognomon radiatus, 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

4 references

Each of the 5 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 content2

Picture of Isognomon radiatus

Credit
Anton, 1838
Licence
CC0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Isognomon radiatus · FMNH:Invertebrate Zoology:183228

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 itIsognomon through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Anton 1838)