Parasemionotus

Parasemionotus is an extinct genus of prehistoric bony fish that lived in the Induan age of the Early Triassic epoch in what is now Madagascar. It is the name giving genus of the family Parasemionotidae and the order Parasemionotiformes.

Parasemionotus

Uncredited · 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
ParasemionotidaePBDB
Diet
grazer, detritivorePBDB, for Parasemionotidae
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 11 million years on record.

The record covers at least 250.8 Mya to 239.48 Mya. No occurrence read is dated outside 251.1 Mya to 237 Mya.

Early Triassic — about 6 of 10 occurrencesEarly TriassicMiddle Triassic — about 4 of 10 occurrencesMiddle TriassicLate Triassic — about 0 of 10 occurrences252–251 Mya — about 0.1 occurrences251–251 Mya — about 6 occurrences242–241 Mya — about 0.2 occurrences241–241 Mya — about 0.2 occurrences241–240 Mya — about 0.2 occurrences240–240 Mya — about 0.2 occurrences240–239 Mya — about 0.6 occurrences239–239 Mya — about 0.6 occurrences239–238 Mya — about 0.6 occurrences238–238 Mya — about 0.6 occurrences238–237 Mya — about 0.6 occurrences237–237 Mya — about 0.0 occurrences250.8 Mya239.48 Mya251.6 Mya236.5 Mya

10 occurrences of Parasemionotus on record, most of them in the Early 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

10 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

Muschelkalk — 41.27°N, 1.12°EMiddle Sakamena — 13.51°S, 49.07°EMiddle Sakamena — 21.71°S, 45.18°E

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The named rock units Parasemionotus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Parasemionotus and its relatives

Early Triassic

Where Parasemionotus and its relatives were recorded in the Early Triassic.

Found in the same rock

96 taxa

The Paleobiology Database records 7 sites for Parasemionotus, 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

7 references

Each of the 10 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 content1

Picture of Parasemionotus

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Parasemionotus 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.

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 itParasemionotidae through timeFormations of the Early TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Piveteau 1929