Eosemionotus

Eosemionotus is an extinct genus of prehistoric marine macrosemiid ray-finned fish from the Middle Triassic. It was a speciose genus known from throughout Europe, including formations of the Muschelkalk.

Eosemionotus

Ghedoghedo · CC BY-SA 4.0 · 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
MacrosemiidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 4.9 million years on record.

The record covers at least 244.4 Mya to 239.48 Mya. No occurrence read is dated outside 247 Mya to 237 Mya.

Early Triassic — about 0 of 34 occurrencesMiddle Triassic — about 34 of 34 occurrencesMiddle TriassicLate Triassic — about 0 of 34 occurrences247–247 Mya — about 0.1 occurrences247–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–245 Mya — about 0.1 occurrences245–245 Mya — about 1 occurrence245–245 Mya — about 2 occurrences245–244 Mya — about 1 occurrence244–244 Mya — about 0.8 occurrences244–243 Mya — about 0.8 occurrences243–243 Mya — about 1.0 occurrences243–243 Mya — about 1 occurrence243–242 Mya — about 1 occurrence242–242 Mya — about 1 occurrence242–242 Mya — about 1 occurrence242–241 Mya — about 2 occurrences241–241 Mya — about 3 occurrences241–241 Mya — about 3 occurrences241–240 Mya — about 3 occurrences240–240 Mya — about 3 occurrences240–239 Mya — about 3 occurrences239–239 Mya — about 0.7 occurrences239–239 Mya — about 0.7 occurrences239–238 Mya — about 0.7 occurrences238–238 Mya — about 0.7 occurrences238–238 Mya — about 0.7 occurrences238–237 Mya — about 0.7 occurrences237–237 Mya — about 0.5 occurrences244.4 Mya239.48 Mya247.5 Mya236.5 Mya

34 occurrences of Eosemionotus on record, most of them in the Middle Triassic. 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

34 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

9 formations

Meride — 45.90°N, 8.93°EMeride — 45.89°N, 8.96°ECassina — 45.91°N, 8.95°EVossenveld — 51.97°N, 6.78°EMuschelkalk — 41.27°N, 1.12°EBesano — 45.91°N, 8.95°EStrelovec — 46.33°N, 14.59°EHeilbronn — 52.49°N, 13.83°EMeride — 45.89°N, 8.90°EBesano — 45.89°N, 8.90°E

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The named rock units Eosemionotus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.

Eosemionotus and its relatives

Middle Triassic

Where Eosemionotus and its relatives were recorded in the Middle Triassic.

Found in the same rock

140 taxa

The Paleobiology Database records 30 sites for Eosemionotus, 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

11 references

Each of the 34 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 content1

Picture of Eosemionotus

Credit
Ghedoghedo
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Eosemionotus 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.

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 itMacrosemiidae through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Stolley 1919