Megadesmus pristinus

No picture of Megadesmus pristinus was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Megadesmus pristinus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
MegadesmusPBDB
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 8.8 million years on record.

Every occurrence read is dated to somewhere between 298.9 Mya and 290.1 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Carboniferous — about 0 of 4 occurrencesPermian — about 4 of 4 occurrencesPermian299–299 Mya — about 0.0 occurrences299–298 Mya — about 0.1 occurrences298–298 Mya — about 0.1 occurrences298–298 Mya — about 0.1 occurrences298–297 Mya — about 0.1 occurrences297–297 Mya — about 0.1 occurrences297–297 Mya — about 0.1 occurrences297–296 Mya — about 0.1 occurrences296–296 Mya — about 0.1 occurrences296–296 Mya — about 0.1 occurrences296–295 Mya — about 0.1 occurrences295–295 Mya — about 0.1 occurrences295–295 Mya — about 0.1 occurrences295–295 Mya — about 0.1 occurrences295–294 Mya — about 0.1 occurrences294–294 Mya — about 0.1 occurrences294–294 Mya — about 0.1 occurrences294–293 Mya — about 0.3 occurrences293–293 Mya — about 0.3 occurrences293–293 Mya — about 0.3 occurrences293–292 Mya — about 0.3 occurrences292–292 Mya — about 0.3 occurrences292–292 Mya — about 0.3 occurrences292–291 Mya — about 0.3 occurrences291–291 Mya — about 0.3 occurrences291–291 Mya — about 0.3 occurrences291–290 Mya — about 0.3 occurrences290–290 Mya — about 0.1 occurrences299.4 Mya289.6 Mya

4 occurrences of Megadesmus pristinus on record, most of them in the Permian. 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

4 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

3 formations

Tasmanites Shale — 41.28°S, 146.43°ESpreyton — 41.28°S, 146.43°ESwifts Jetty Sandstone — 41.19°S, 146.84°E

Loading coastlines…

The named rock units Megadesmus pristinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Megadesmus pristinus and its relatives

Permian

Where Megadesmus pristinus and its relatives were recorded in the Permian.

Found in the same rock

25 taxa

The Paleobiology Database records 4 sites for Megadesmus pristinus, 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 4 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 content0

No picture of Megadesmus pristinus was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Megadesmus pristinus, or no answer at all. This entry cannot say which.

No 3D scan of Megadesmus pristinus was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itMegadesmus through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Runnegar 1972