Brevirostres

Brevirostres is an obsolete group of crocodilians that, as originally formulated, included alligatoroids and crocodyloids, but not gavialoids. Results of molecular phylogenetic analysis uniformly draw gavialoids and crocodyloids into a close relationship; in that case, Brevirostres becomes obsolete with Crocodilia.

Brevirostres

Bilby · CC BY 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
CrocodyliaPBDB
Diet
carnivorePBDB, for Crocodylia
Motility
actively mobilePBDB, for Osteichthyes
Environment
marinePBDB, for Mesoeucrocodylia

Time the record covers

At least 54 million years on record.

The record covers at least 66 Mya to 11.63 Mya. No occurrence read is dated outside 72.2 Mya to 5.333 Mya.

Late Cretaceous — about 1 of 2 occurrencesLate CretaceousPaleocene — about 0 of 2 occurrencesEocene — about 0 of 2 occurrencesOligocene — about 0 of 2 occurrencesMiocene — about 1 of 2 occurrencesMiocenePliocene — about 0 of 2 occurrences74–71 Mya — about 0.2 occurrences71–69 Mya — about 0.4 occurrences69–67 Mya — about 0.4 occurrences67–64 Mya — about 0.1 occurrences13–11 Mya — about 0.1 occurrences11–8.6 Mya — about 0.4 occurrences8.6–6.3 Mya — about 0.4 occurrences6.3–4.0 Mya — about 0.2 occurrences66 Mya11.63 Mya74 Mya4 Mya

2 occurrences of Brevirostres on record. 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

2 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

2 formations

Solimoes — 10.94°S, 69.34°WHekou — 25.82°N, 114.97°E

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The named rock units Brevirostres has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Found in the same rock

1 taxon

The Paleobiology Database records 1 site for Brevirostres, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

2 references

Each of the 2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Brevirostres

Credit
Bilby
Licence
CC BY 3.0
Commercial use
the licence allows it

No 3D scan of Brevirostres 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.

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 itCrocodylia through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cuvier