Necrosaurus

Necrosaurus

via GBIF · 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
NecrosauridaePBDB
Diet
carnivore, insectivorePBDB, for Necrosauridae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Necrosauridae

Time the record covers

At least 22 million years on record.

The record covers at least 56 Mya to 33.9 Mya. No occurrence read is dated outside 59.24 Mya to 15.98 Mya.

Paleocene — about 1 of 60 occurrencesPaleoceneEocene — about 46 of 60 occurrencesEoceneOligocene — about 12 of 60 occurrencesOligoceneMiocene — about 1 of 60 occurrencesMiocene60–59 Mya — about 0.2 occurrences59–57 Mya — about 0.5 occurrences57–56 Mya — about 0.7 occurrences56–54 Mya — about 1 occurrence54–53 Mya — about 1 occurrence53–51 Mya — about 1 occurrence51–50 Mya — about 1 occurrence50–48 Mya — about 1 occurrence48–47 Mya — about 1 occurrence47–45 Mya — about 1 occurrence45–44 Mya — about 1 occurrence44–42 Mya — about 1 occurrence42–41 Mya — about 1 occurrence41–39 Mya — about 2 occurrences39–38 Mya — about 2 occurrences38–36 Mya — about 12 occurrences36–35 Mya — about 12 occurrences35–33 Mya — about 7 occurrences33–32 Mya — about 3 occurrences32–30 Mya — about 3 occurrences30–29 Mya — about 3 occurrences29–27 Mya — about 2 occurrences27–26 Mya — about 0.1 occurrences26–24 Mya — about 0.1 occurrences24–23 Mya — about 0.1 occurrences23–21 Mya — about 0.1 occurrences21–20 Mya — about 0.1 occurrences20–18 Mya — about 0.1 occurrences18–17 Mya — about 0.1 occurrences17–15 Mya — about 0.1 occurrences56 Mya33.9 Mya60.1 Mya15.1 Mya

60 occurrences of Necrosaurus 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

60 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

11 formations

Perrière — 44.37°N, 1.73°EPerrière — 44.38°N, 1.43°EPerrière — 44.35°N, 1.73°EPerriere — 44.35°N, 1.73°EPerriere — 44.37°N, 1.73°EQuercy Phosphorites — 44.27°N, 1.63°EBorgloon — 50.85°N, 4.82°ELower Headon Beds — 50.63°N, 1.55°WArgiles d'lignite du Soissonnais — 49.33°N, 2.66°ETienen — 50.82°N, 5.10°EConglomérat de Cernay — 49.27°N, 4.10°ELignites de Soissonais — 49.08°N, 4.03°ECalcaire de Saint-Ouen — 49.13°N, 3.35°EWind River — 43.20°N, 107.10°W

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The named rock units Necrosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 42 occurrences have no formation on record, which is common for older literature.

Necrosaurus and its relatives

Eocene

Where Necrosaurus and its relatives were recorded in the Eocene.

Found in the same rock

769 taxa

The Paleobiology Database records 41 sites for Necrosaurus, 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

15 references

Each of the 60 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. 3 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 Necrosaurus

Source
GBIF
Credit
via GBIF
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Necrosaurus 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.

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

Keep going

What may have been alongside itNecrosauridae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Filhol 1876