Leidyosuchus

Leidyosuchus is an extinct genus of eusuchian, either an alligatoroid crocodilian or a stem-group crocodilian, from the Late Cretaceous of Alberta. It was named in 1907 by Lawrence Lambe, and the type species is L. canadensis. It is known from a number of specimens from the middle Campanian age Dinosaur Park Formation. It was a medium-sized alligatoroid, with a maximum skull length greater than 40 centimeters (16 in).

Leidyosuchus

Daderot · CC0 · 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
Sits inside
AlligatoroideaPBDB
Diet
carnivorePBDB, for Crocodylia
Motility
actively mobilePBDB, for Osteichthyes
Environment
marinePBDB, for Mesoeucrocodylia

Time the record covers

At least 6.2 million years on record.

The record covers at least 72.2 Mya to 66 Mya. No occurrence read is dated outside 85.7 Mya to 63.4 Mya.

Late Cretaceous — about 46 of 47 occurrencesLate CretaceousPaleocene — about 1 of 47 occurrencesPaleocene86–85 Mya — about 0.0 occurrences85–85 Mya — about 0.1 occurrences85–84 Mya — about 0.1 occurrences84–83 Mya — about 2 occurrences83–82 Mya — about 3 occurrences82–82 Mya — about 3 occurrences82–81 Mya — about 3 occurrences81–80 Mya — about 3 occurrences80–79 Mya — about 3 occurrences79–78 Mya — about 3 occurrences78–78 Mya — about 3 occurrences78–77 Mya — about 3 occurrences77–76 Mya — about 3 occurrences76–75 Mya — about 3 occurrences75–75 Mya — about 3 occurrences75–74 Mya — about 3 occurrences74–73 Mya — about 3 occurrences73–72 Mya — about 3 occurrences72–71 Mya — about 0.4 occurrences71–71 Mya — about 0.4 occurrences71–70 Mya — about 0.4 occurrences70–69 Mya — about 0.4 occurrences69–68 Mya — about 0.4 occurrences68–68 Mya — about 0.4 occurrences68–67 Mya — about 0.4 occurrences67–66 Mya — about 0.4 occurrences66–65 Mya — about 0.3 occurrences65–64 Mya — about 0.3 occurrences64–64 Mya — about 0.3 occurrences64–63 Mya — about 0.1 occurrences72.2 Mya66 Mya86.2 Mya62.9 Mya

47 occurrences of Leidyosuchus on record, most of them in the Late 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

47 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

7 formations

Dinosaur Park — 50.81°N, 111.63°WDinosaur Park — 49.12°N, 110.47°WDinosaur Park — 50.74°N, 111.49°WDinosaur Park — 50.75°N, 111.46°WDinosaur Park — 50.75°N, 111.40°WDinosaur Park — 50.78°N, 111.33°WDinosaur Park — 50.68°N, 108.09°WOldman — 50.75°N, 111.51°WOldman — 50.83°N, 111.32°WOldman — 50.48°N, 111.38°WLance — 45.39°N, 103.70°WLance — 43.49°N, 104.46°WNacimiento — 36.40°N, 108.08°WMarshalltown — 39.97°N, 74.90°WKaiparowits — 37.45°N, 111.53°WEl Gallo — 30.05°N, 115.76°W

Loading coastlines…

The named rock units Leidyosuchus 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.

Leidyosuchus and its relatives

Late Cretaceous

Where Leidyosuchus and its relatives were recorded in the Late Cretaceous.

Found in the same rock

177 taxa

The Paleobiology Database records 47 sites for Leidyosuchus, 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 47 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 content2

Picture of Leidyosuchus

Credit
Daderot
Licence
CC0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itAlligatoroidea through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lambe 1907