Galeorhinus

Galeorhinus is a genus of houndshark containing one extant species, the widespread but highly threatened school shark (G. galeus), and several extinct species dating back to the Late Cretaceous (Cenomanian).

Galeorhinus

D Ross Robertson · Public Domain · 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
Also called
school sharkPBDB
Sits inside
TriakidaePBDB
Diet
carnivorePBDB, for Carcharhiniformes
Life habit
nektonicPBDB, for Carcharhiniformes
Motility
actively mobilePBDB, for Carcharhiniformes

Time the record covers

At least 83 million years on record.

The record covers at least 83.6 Mya to 11.7 ka. No occurrence read is dated outside 85.7 Mya to 0 Mya.

Late Cretaceous — about 24 of 205 occurrencesLate CretaceousPaleocene — about 10 of 205 occurrencesPaleoceneEocene — about 109 of 205 occurrencesEoceneOligocene — about 8 of 205 occurrencesOligoceneMiocene — about 33 of 205 occurrencesMiocenePliocene — about 9 of 205 occurrencesPleistocene — about 10 of 205 occurrences87–85 Mya — about 1 occurrence85–82 Mya — about 2 occurrences82–79 Mya — about 2 occurrences79–76 Mya — about 2 occurrences76–73 Mya — about 2 occurrences73–70 Mya — about 5 occurrences70–67 Mya — about 6 occurrences67–64 Mya — about 3 occurrences64–61 Mya — about 0.9 occurrences61–58 Mya — about 4 occurrences58–55 Mya — about 8 occurrences55–52 Mya — about 15 occurrences52–50 Mya — about 15 occurrences50–47 Mya — about 17 occurrences47–44 Mya — about 19 occurrences44–41 Mya — about 18 occurrences41–38 Mya — about 10 occurrences38–35 Mya — about 9 occurrences35–32 Mya — about 4 occurrences32–29 Mya — about 2 occurrences29–26 Mya — about 2 occurrences26–23 Mya — about 2 occurrences23–20 Mya — about 1 occurrence20–17 Mya — about 3 occurrences17–15 Mya — about 4 occurrences15–12 Mya — about 11 occurrences12–8.7 Mya — about 4 occurrences8.7–5.8 Mya — about 8 occurrences5.8–2.9 Mya — about 10 occurrences2.9–0 Mya — about 13 occurrences83.6 Mya11.7 ka87 Mya0 Mya

205 occurrences of Galeorhinus on record, most of them in the Eocene. The Paleobiology Database records this as a living group. 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

205 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

84 formations

Marnes de Donzacq — 43.75°N, 0.84°WFox Hills — 46.26°N, 100.55°WFox Hills — 46.47°N, 99.58°WFox Hills — 44.52°N, 102.39°WPalos Verdes Sand — 33.76°N, 118.29°WPalos Verdes Sand — 33.66°N, 117.90°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.75°N, 118.29°WPalos Verdes Sand — 33.64°N, 117.88°WSelsey — 50.80°N, 1.21°WLondon Clay — 51.40°N, 0.83°ELondon Clay — 50.78°N, 0.65°WTallahatta — 31.31°N, 88.73°WTallahatta — 31.57°N, 88.34°WTallahatta — 31.37°N, 86.52°WKortrijk Clay — 50.80°N, 3.22°EElmore — 50.80°N, 1.20°WYazoo — 31.82°N, 92.33°WYazoo — 31.71°N, 87.96°WYazoo — 31.93°N, 91.94°WGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.50°N, 88.50°WGosport Sand — 31.59°N, 88.02°WBahía Inglesa — 27.13°S, 70.83°WBahía Inglesa — 26.22°S, 70.72°WBahía Inglesa — 27.16°S, 70.89°WEsbarrondadoiro — 38.17°N, 8.17°WEsbarrondadoiro — 38.11°N, 8.36°WEsbarrondadoiro — 39.30°N, 8.12°WBrussel Sand — 50.92°N, 4.56°EBrussel Sand — 50.79°N, 4.37°EDongen — 52.73°N, 6.30°EDongen — 53.16°N, 6.22°EMoodys Branch — 32.23°N, 92.15°WMoodys Branch — 32.90°N, 90.19°WTuscahoma — 32.35°N, 88.68°WBashi — 32.35°N, 88.68°WJacksonian — 32.74°N, 83.50°WSamlat — 23.36°N, 16.03°WSenhata — 35.16°N, 139.86°EKuma — 45.10°N, 34.63°EBuchak — 49.53°N, 39.07°ECouche II — 32.85°N, 6.63°WCouche II — 32.81°N, 6.83°WLandana — 5.22°S, 12.14°E

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The named rock units Galeorhinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 60 further formations hold fewer occurrences each and are not listed. 59 occurrences have no formation on record, which is common for older literature.

Galeorhinus and its relatives

Eocene

Where Galeorhinus and its relatives were recorded in the Eocene.

Found in the same rock

2,513 taxa

The Paleobiology Database records 186 sites for Galeorhinus, 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

119 references

Each of the 205 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. 107 further references are not listed. 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 Galeorhinus

Credit
D Ross Robertson
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Galeorhinus 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 itTriakidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. de Blainville and Prévost 1816