Isurus praecursor

Isurus praecursor

Yale Peabody Museum · 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
IsurusPBDB
Diet
carnivorePBDB, for Lamniformes
Life habit
nektonicPBDB, for Lamniformes
Motility
actively mobilePBDB, for Lamniformes

Time the record covers

At least 3.3 million years on record.

The record covers at least 41.03 Mya to 37.71 Mya. No occurrence read is dated outside 56 Mya to 33.9 Mya.

Paleocene — about 0 of 37 occurrencesEocene — about 37 of 37 occurrencesEoceneOligocene — about 0 of 37 occurrences57–56 Mya — about 0.0 occurrences56–55 Mya — about 0.1 occurrences55–54 Mya — about 0.1 occurrences54–53 Mya — about 0.1 occurrences53–53 Mya — about 0.1 occurrences53–52 Mya — about 0.1 occurrences52–51 Mya — about 0.1 occurrences51–50 Mya — about 0.1 occurrences50–50 Mya — about 0.1 occurrences50–49 Mya — about 0.1 occurrences49–48 Mya — about 0.2 occurrences48–47 Mya — about 2 occurrences47–46 Mya — about 2 occurrences46–46 Mya — about 2 occurrences46–45 Mya — about 2 occurrences45–44 Mya — about 2 occurrences44–43 Mya — about 2 occurrences43–43 Mya — about 2 occurrences43–42 Mya — about 2 occurrences42–41 Mya — about 2 occurrences41–40 Mya — about 2 occurrences40–40 Mya — about 1 occurrence40–39 Mya — about 1 occurrence39–38 Mya — about 1 occurrence38–37 Mya — about 2 occurrences37–36 Mya — about 2 occurrences36–36 Mya — about 2 occurrences36–35 Mya — about 2 occurrences35–34 Mya — about 2 occurrences34–33 Mya — about 0.6 occurrences41.03 Mya37.71 Mya56.5 Mya33.4 Mya

37 occurrences of Isurus praecursor on record, most of them in the Eocene. 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

37 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

20 formations

Selsey — 50.80°N, 1.21°WLa Meseta — 64.24°S, 56.68°WLa Meseta — 64.24°S, 56.63°WMarnes de Donzacq — 43.75°N, 0.84°WElmore — 50.80°N, 1.20°WMoodys Branch — 32.23°N, 92.15°WMoodys Branch — 32.90°N, 90.19°WYazoo — 31.82°N, 92.33°WYazoo — 31.93°N, 91.94°WBrussel Sand — 50.79°N, 4.37°EGar Gehannam — 29.32°N, 30.15°EQasr el-Sagha — 29.60°N, 30.67°ERishtan — 41.65°N, 64.69°EWadi Esh-Shallala — 31.57°N, 37.12°EDaba'a — 29.16°N, 27.43°EClinchfield — 32.91°N, 83.36°WFürstenau — 52.59°N, 7.22°ELlajas — 34.32°N, 118.63°WMission Valley — 32.92°N, 117.09°WKuma — 45.10°N, 34.63°EBuchak — 49.53°N, 39.07°EMarnes de Miretrain — 43.69°N, 1.13°WLede — 50.81°N, 4.33°E

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The named rock units Isurus praecursor has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Isurus praecursor and its relatives

Eocene

Where Isurus praecursor and its relatives were recorded in the Eocene.

Found in the same rock

607 taxa

The Paleobiology Database records 37 sites for Isurus praecursor, 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

21 references

Each of the 37 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. 9 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 Isurus praecursor

Source
GBIF
Credit
Yale Peabody Museum
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

Everything alive alongside itIsurus through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Thurmond and Jones 1981)