Macrepistius

Macrepistius is an extinct genus of prehistoric ray-finned fish that lived during the Albian stage of the Early Cretaceous epoch. It is known from the Lower Cretaceous marine deposits of the Glen Rose Formation in north-central Texas, and measured 30 cm long.

Macrepistius

G. Scott · CC0 · via GBIF. 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
OphiopsiellidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At most 78 million years on record.

Every occurrence read is dated to somewhere between 143.1 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Jurassic — about 0 of 10 occurrencesEarly Cretaceous — about 10 of 10 occurrencesEarly CretaceousLate Cretaceous — about 0 of 10 occurrencesLate CretaceousPaleocene — about 0 of 10 occurrences145–142 Mya — about 0.0 occurrences142–139 Mya — about 0.0 occurrences139–137 Mya — about 0.0 occurrences137–134 Mya — about 0.0 occurrences134–131 Mya — about 0.0 occurrences131–129 Mya — about 0.0 occurrences129–126 Mya — about 0.0 occurrences126–123 Mya — about 0.0 occurrences123–121 Mya — about 0.0 occurrences121–118 Mya — about 0.3 occurrences118–115 Mya — about 0.5 occurrences115–113 Mya — about 1 occurrence113–110 Mya — about 3 occurrences110–107 Mya — about 1 occurrence107–105 Mya — about 1 occurrence105–102 Mya — about 1 occurrence102–99 Mya — about 0.6 occurrences99–97 Mya — about 0.0 occurrences97–94 Mya — about 0.0 occurrences94–91 Mya — about 0.0 occurrences91–89 Mya — about 0.0 occurrences89–86 Mya — about 0.0 occurrences86–83 Mya — about 0.0 occurrences83–80 Mya — about 0.0 occurrences80–78 Mya — about 0.0 occurrences78–75 Mya — about 0.0 occurrences75–72 Mya — about 0.0 occurrences72–70 Mya — about 0.0 occurrences70–67 Mya — about 0.0 occurrences67–64 Mya — about 0.0 occurrences145 Mya64 Mya

10 occurrences of Macrepistius on record, most of them in the Early Cretaceous. 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

5 formations

Paluxy — 32.00°N, 98.25°WPaluxy — 32.22°N, 98.20°WPaluxy — 31.70°N, 98.51°WPaluxy — 33.50°N, 97.50°WTwin Mountains — 32.27°N, 97.91°WWalnut Clay — 32.15°N, 97.58°WGlen Rose Limestone — 33.09°N, 97.52°WGlen Rose — 32.24°N, 97.74°W

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

Macrepistius and its relatives

Early Cretaceous

Where Macrepistius and its relatives were recorded in the Early Cretaceous.

Found in the same rock

49 taxa

The Paleobiology Database records 10 sites for Macrepistius, 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

4 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. 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 Macrepistius

Source
GBIF
Credit
G. Scott
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Macrepistius 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 itOphiopsiellidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1894