Alexenia occidentalis

No picture of Alexenia occidentalis 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 Alexenia occidentalis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
AlexeniaPBDB
Diet
suspension feederPBDB, for Productidina
Life habit
low-level epifaunalPBDB, for Productidina
Motility
stationaryPBDB, for Productidina
Vision
blindPBDB, for Strophomenata
Environment
marinePBDB, for Lophophorata

Time the record covers

At most 12 million years on record.

Every occurrence read is dated to somewhere between 286 Mya and 274.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Permian — about 17 of 17 occurrencesPermian286–286 Mya — about 0.1 occurrences286–285 Mya — about 0.1 occurrences285–285 Mya — about 0.1 occurrences285–284 Mya — about 0.1 occurrences284–284 Mya — about 0.1 occurrences284–284 Mya — about 0.1 occurrences284–283 Mya — about 0.3 occurrences283–283 Mya — about 0.8 occurrences283–282 Mya — about 0.8 occurrences282–282 Mya — about 0.8 occurrences282–281 Mya — about 0.8 occurrences281–281 Mya — about 0.8 occurrences281–281 Mya — about 0.8 occurrences281–280 Mya — about 0.8 occurrences280–280 Mya — about 0.8 occurrences280–279 Mya — about 0.8 occurrences279–279 Mya — about 0.8 occurrences279–279 Mya — about 0.8 occurrences279–278 Mya — about 0.8 occurrences278–278 Mya — about 0.8 occurrences278–277 Mya — about 0.8 occurrences277–277 Mya — about 0.8 occurrences277–276 Mya — about 0.8 occurrences276–276 Mya — about 0.8 occurrences276–276 Mya — about 0.8 occurrences276–275 Mya — about 0.8 occurrences275–275 Mya — about 0.8 occurrences275–274 Mya — about 0.6 occurrences286.5 Mya273.9 Mya

17 occurrences of Alexenia occidentalis 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

17 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

1 formation

Coyote Butte — 43.95°N, 119.76°WCoyote Butte — 43.92°N, 119.88°WCoyote Butte — 44.06°N, 119.68°WCoyote Butte — 43.93°N, 119.76°WCoyote Butte — 44.00°N, 119.73°W

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

Alexenia occidentalis and its relatives

Permian

Where Alexenia occidentalis and its relatives were recorded in the Permian.

Found in the same rock

39 taxa

The Paleobiology Database records 17 sites for Alexenia occidentalis, 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 17 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 Alexenia occidentalis 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 Alexenia occidentalis, or no answer at all. This entry cannot say which.

No 3D scan of Alexenia occidentalis 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 itAlexenia through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cooper 1957