Allognathosuchus

Allognathosuchus is an extinct genus of alligatorine crocodylian with a complicated taxonomic history. It was named in 1921.

Allognathosuchus

Smokeybjb · CC BY-SA 3.0 · 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
AlligatorinaePBDB
Diet
carnivorePBDB
Life habit
amphibiousPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
freshwaterPBDB

Time the record covers

At least 34 million years on record.

The record covers at least 72.2 Mya to 37.71 Mya. No occurrence read is dated outside 83.6 Mya to 33.9 Mya.

Late Cretaceous — about 5 of 133 occurrencesLate CretaceousPaleocene — about 24 of 133 occurrencesPaleoceneEocene — about 104 of 133 occurrencesEoceneOligocene — about 0 of 133 occurrences85–83 Mya — about 0.1 occurrences83–81 Mya — about 0.2 occurrences81–79 Mya — about 0.2 occurrences79–78 Mya — about 0.2 occurrences78–76 Mya — about 0.2 occurrences76–74 Mya — about 0.2 occurrences74–73 Mya — about 0.2 occurrences73–71 Mya — about 0.9 occurrences71–69 Mya — about 1 occurrence69–67 Mya — about 1 occurrence67–66 Mya — about 3 occurrences66–64 Mya — about 10 occurrences64–62 Mya — about 4 occurrences62–60 Mya — about 0.9 occurrences60–59 Mya — about 1 occurrence59–57 Mya — about 2 occurrences57–55 Mya — about 16 occurrences55–54 Mya — about 31 occurrences54–52 Mya — about 31 occurrences52–50 Mya — about 16 occurrences50–48 Mya — about 3 occurrences48–47 Mya — about 3 occurrences47–45 Mya — about 2 occurrences45–43 Mya — about 1 occurrence43–42 Mya — about 1 occurrence42–40 Mya — about 0.8 occurrences40–38 Mya — about 0.0 occurrences38–36 Mya — about 0.4 occurrences36–35 Mya — about 0.5 occurrences35–33 Mya — about 0.2 occurrences72.2 Mya37.71 Mya85 Mya33 Mya

133 occurrences of Allognathosuchus 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

133 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

19 formations

Willwood — 44.30°N, 109.00°WWillwood — 44.63°N, 108.89°WWillwood — 44.44°N, 108.63°WWillwood — 44.56°N, 108.70°WWillwood — 44.59°N, 108.62°WWillwood — 44.51°N, 108.68°WWillwood — 44.53°N, 108.43°WWillwood — 44.37°N, 108.67°WWillwood — 44.65°N, 108.54°WWillwood — 44.60°N, 108.32°WWillwood — 44.59°N, 108.41°WWillwood — 44.53°N, 108.32°WWillwood — 44.65°N, 108.72°WWillwood — 44.65°N, 108.54°WWillwood — 44.52°N, 108.57°WWillwood — 44.65°N, 108.90°WWillwood — 44.60°N, 108.79°WWillwood — 44.67°N, 108.80°WWillwood — 44.82°N, 109.05°WWillwood — 44.28°N, 108.58°WFerris — 41.95°N, 106.87°WNorth Horn — 39.18°N, 111.27°WNorth Horn — 39.10°N, 111.80°WNorth Horn — 39.00°N, 111.00°WFort Union — 44.91°N, 108.93°WFort Union — 44.69°N, 108.36°WFort Union — 43.85°N, 108.35°WFort Union — 44.30°N, 109.00°WWasatch — 41.80°N, 110.70°WWasatch — 41.70°N, 109.00°WBridger — 41.80°N, 110.70°WBridger — 41.20°N, 110.50°WMarshalltown — 40.30°N, 74.30°WLaredo — 27.53°N, 99.43°WTienen — 50.82°N, 5.10°EWashakie — 40.60°N, 108.10°WMargaret — 78.50°N, 82.00°WDenver — 39.70°N, 104.70°WArgiles d'lignite du Soissonnais — 49.33°N, 2.66°EGreen River — 41.20°N, 110.50°WSevern — 38.96°N, 76.71°WSalamanca — 45.50°S, 67.18°WKrabi Basin B2 — 7.97°N, 99.06°EVaugirard — 48.81°N, 2.24°EWind River — 43.20°N, 107.10°W

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The named rock units Allognathosuchus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Allognathosuchus and its relatives

Eocene

Where Allognathosuchus and its relatives were recorded in the Eocene.

Found in the same rock

1,118 taxa

The Paleobiology Database records 132 sites for Allognathosuchus, 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

28 references

Each of the 133 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. 16 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 Allognathosuchus

Credit
Smokeybjb
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Structured light scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Allognathosuchus sp. · MGPT:PU:17329

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 itAlligatorinae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Mook 1921