Dielasma expansum

No picture of Dielasma expansum was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Dielasma expansum, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
DielasmaPBDB
Diet
suspension feederPBDB, for Terebratulida
Life habit
low-level epifaunalPBDB, for Terebratulida
Motility
stationaryPBDB, for Terebratulida
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At most 17 million years on record.

Every occurrence read is dated to somewhere between 283.3 Mya and 266.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Permian — about 3 of 3 occurrencesPermian284–283 Mya — about 0.0 occurrences283–283 Mya — about 0.1 occurrences283–282 Mya — about 0.1 occurrences282–281 Mya — about 0.1 occurrences281–281 Mya — about 0.1 occurrences281–280 Mya — about 0.1 occurrences280–280 Mya — about 0.1 occurrences280–279 Mya — about 0.1 occurrences279–279 Mya — about 0.1 occurrences279–278 Mya — about 0.1 occurrences278–277 Mya — about 0.1 occurrences277–277 Mya — about 0.1 occurrences277–276 Mya — about 0.1 occurrences276–276 Mya — about 0.1 occurrences276–275 Mya — about 0.1 occurrences275–275 Mya — about 0.1 occurrences275–274 Mya — about 0.1 occurrences274–273 Mya — about 0.2 occurrences273–273 Mya — about 0.2 occurrences273–272 Mya — about 0.2 occurrences272–272 Mya — about 0.2 occurrences272–271 Mya — about 0.2 occurrences271–270 Mya — about 0.2 occurrences270–270 Mya — about 0.2 occurrences270–269 Mya — about 0.2 occurrences269–269 Mya — about 0.2 occurrences269–268 Mya — about 0.2 occurrences268–268 Mya — about 0.2 occurrences268–267 Mya — about 0.2 occurrences267–266 Mya — about 0.0 occurrences283.8 Mya266.4 Mya

3 occurrences of Dielasma expansum 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

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

Road Canyon — 30.39°N, 103.14°WRoad Canyon — 30.30°N, 103.34°WRoad — 30.35°N, 103.27°W

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

Dielasma expansum and its relatives

Permian

Where Dielasma expansum and its relatives were recorded in the Permian.

Found in the same rock

252 taxa

The Paleobiology Database records 3 sites for Dielasma expansum, 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

No picture of Dielasma expansum was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Dielasma expansum, or no answer at all. This entry cannot say which.

No 3D scan of Dielasma expansum 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 itDielasma through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cooper and Grant 1976