Chaenogaleus

Chaenogaleus is a genus of shark containing two species. Only one is extant.Hooktooth shark (Bleeker, 1852) †Chaenogaleus affinis (Probst, 1879)

Chaenogaleus

Sir Francis Day · Public Domain · via Wikidata/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
HemigaleidaePBDB
Diet
carnivorePBDB, for Carcharhiniformes
Life habit
nektonicPBDB, for Carcharhiniformes
Motility
actively mobilePBDB, for Carcharhiniformes

Time the record covers

At least 42 million years on record.

The record covers at least 48.07 Mya to 5.333 Mya. No occurrence read is dated outside 56 Mya to 3.6 Mya.

Paleocene — about 0 of 35 occurrencesEocene — about 1 of 35 occurrencesEoceneOligocene — about 0 of 35 occurrencesMiocene — about 32 of 35 occurrencesMiocenePliocene — about 2 of 35 occurrences57–55 Mya — about 0.1 occurrences55–53 Mya — about 0.2 occurrences53–52 Mya — about 0.2 occurrences52–50 Mya — about 0.2 occurrences50–48 Mya — about 0.2 occurrences24–23 Mya — about 0.2 occurrences23–21 Mya — about 0.6 occurrences21–19 Mya — about 2 occurrences19–17 Mya — about 2 occurrences17–15 Mya — about 4 occurrences15–13 Mya — about 8 occurrences13–12 Mya — about 13 occurrences12–9.8 Mya — about 1 occurrence9.8–8.0 Mya — about 1 occurrence8.0–6.2 Mya — about 0.7 occurrences6.2–4.4 Mya — about 1 occurrence4.4–2.6 Mya — about 0.9 occurrences48.07 Mya5.333 Mya57 Mya3 Mya

35 occurrences of Chaenogaleus on record, most of them in the Miocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

35 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

14 formations

Florianer Schichten — 46.88°N, 15.36°EHrušky — 48.81°N, 16.63°ETuscahoma — 32.35°N, 88.68°WPungo River — 35.40°N, 76.80°WYorktown — 35.36°N, 76.82°WTrent — 35.07°N, 77.15°WBlue Clay — 35.93°N, 14.34°EWeissenegg — 46.89°N, 15.51°EUscari — 9.57°N, 82.57°WBerchem — 51.20°N, 4.44°EAchen — 47.88°N, 12.27°ESables des Landes — 43.94°N, 0.75°WCacela — 37.08°N, 8.23°WUpper Marine Molasse — 48.56°N, 10.06°E

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The named rock units Chaenogaleus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 19 occurrences have no formation on record, which is common for older literature.

Chaenogaleus and its relatives

Miocene

Where Chaenogaleus and its relatives were recorded in the Miocene.

Found in the same rock

944 taxa

The Paleobiology Database records 34 sites for Chaenogaleus, 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

19 references

Each of the 35 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. 7 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 Chaenogaleus

Credit
Sir Francis Day
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Chaenogaleus 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 itHemigaleidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gill 1861