Pachycormus

Pachycormus is an extinct genus of pachycormiform ray-finned fish known from the Early Jurassic of Europe.

Pachycormus

The sesame tree · 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
AsthenocorminaePBDB
Diet
carnivorePBDB, for Pachycormidae
Life habit
nektonicPBDB, for Pachycormiformes
Motility
actively mobilePBDB, for Pachycormiformes

Time the record covers

At least 21 million years on record.

The record covers at least 182.9 Mya to 161.5 Mya. No occurrence read is dated outside 184.2 Mya to 154.8 Mya.

Early Jurassic — about 35 of 38 occurrencesEarly JurassicMiddle Jurassic — about 2 of 38 occurrencesMiddle JurassicLate Jurassic — about 1 of 38 occurrencesLate Jurassic185–184 Mya — about 7 occurrences184–183 Mya — about 15 occurrences183–182 Mya — about 2 occurrences182–181 Mya — about 2 occurrences181–180 Mya — about 2 occurrences180–179 Mya — about 2 occurrences179–178 Mya — about 2 occurrences178–177 Mya — about 2 occurrences177–176 Mya — about 2 occurrences176–175 Mya — about 1 occurrence165–164 Mya — about 0.5 occurrences164–163 Mya — about 0.5 occurrences163–162 Mya — about 0.5 occurrences162–161 Mya — about 0.5 occurrences161–160 Mya — about 0.2 occurrences160–159 Mya — about 0.2 occurrences159–158 Mya — about 0.2 occurrences158–157 Mya — about 0.2 occurrences157–156 Mya — about 0.2 occurrences156–155 Mya — about 0.2 occurrences155–154 Mya — about 0.1 occurrences182.9 Mya161.5 Mya184.8 Mya154.2 Mya

38 occurrences of Pachycormus on record, most of them in the Early Jurassic. 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

38 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

6 formations

Beacon Limstone — 50.93°N, 2.91°WCalcare di Sogno — 45.83°N, 9.30°EOxford Clay — 52.55°N, 0.24°WCerritos Bayos — 22.56°S, 69.14°WSogno — 45.79°N, 9.47°EPosidonia Shale — 48.63°N, 9.52°E

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The named rock units Pachycormus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 31 occurrences have no formation on record, which is common for older literature.

Pachycormus and its relatives

Early Jurassic

Where Pachycormus and its relatives were recorded in the Early Jurassic.

Found in the same rock

104 taxa

The Paleobiology Database records 27 sites for Pachycormus, 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

12 references

Each of the 38 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 content3

Picture of Pachycormus

Credit
The sesame tree
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

Synchrotron Imaging scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Pachycormus sp. · mnhn:f:JRE.87

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itAsthenocorminae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1833