Allosaurus fragilis

Allosaurus fragilis

No machine-readable author provided. Sheep81~commonswiki assumed (based on copyright claims). · Public Domain · via Wikidata/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
AllosaurusPBDB
Diet
carnivorePBDB, for Theropoda
Life habit
ground dwelling, solitaryPBDB, for Theropoda
Motility
actively mobilePBDB, for Theropoda
Environment
terrestrialPBDB, for Theropoda

Time the record covers

At most 12 million years on record.

Every occurrence read is dated to somewhere between 154.8 Mya and 143.1 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Jurassic — about 29 of 29 occurrencesLate JurassicEarly Cretaceous — about 0 of 29 occurrences155–154 Mya — about 0.6 occurrences154–154 Mya — about 0.8 occurrences154–154 Mya — about 0.8 occurrences154–153 Mya — about 0.8 occurrences153–153 Mya — about 0.8 occurrences153–152 Mya — about 0.8 occurrences152–152 Mya — about 0.9 occurrences152–151 Mya — about 1.0 occurrences151–151 Mya — about 1.0 occurrences151–151 Mya — about 1.0 occurrences151–150 Mya — about 1.0 occurrences150–150 Mya — about 1.0 occurrences150–149 Mya — about 1.0 occurrences149–149 Mya — about 1 occurrence149–149 Mya — about 1 occurrence149–148 Mya — about 1 occurrence148–148 Mya — about 1 occurrence148–147 Mya — about 1 occurrence147–147 Mya — about 1 occurrence147–146 Mya — about 1 occurrence146–146 Mya — about 1 occurrence146–146 Mya — about 1 occurrence146–145 Mya — about 1 occurrence145–145 Mya — about 1 occurrence145–144 Mya — about 1 occurrence144–144 Mya — about 1 occurrence144–143 Mya — about 1 occurrence143–143 Mya — about 0.8 occurrences155.3 Mya142.6 Mya

29 occurrences of Allosaurus fragilis on record, most of them in the Late Jurassic. 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

29 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

1 formation

Morrison — 41.89°N, 106.04°WMorrison — 42.04°N, 106.39°WMorrison — 42.02°N, 106.05°WMorrison — 38.54°N, 105.22°WMorrison — 41.89°N, 106.08°WMorrison — 39.24°N, 109.00°WMorrison — 42.16°N, 105.91°WMorrison — 36.90°N, 102.83°WMorrison — 41.97°N, 106.29°WMorrison — 39.17°N, 109.25°WMorrison — 39.32°N, 110.69°WMorrison — 40.09°N, 105.94°WMorrison — 40.44°N, 109.30°WMorrison — 39.16°N, 108.73°WMorrison — 39.01°N, 111.02°W

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

Allosaurus fragilis and its relatives

Late Jurassic

Where Allosaurus fragilis and its relatives were recorded in the Late Jurassic.

Found in the same rock

186 taxa

The Paleobiology Database records 25 sites for Allosaurus fragilis, 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

23 references

Each of the 29 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. 11 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 content4

Picture of Allosaurus fragilis

Credit
No machine-readable author provided. Sheep81~commonswiki assumed (based on copyright claims).
Licence
Public Domain
Commercial use
the licence allows it

3D scan

Licence
CC0 — this site’s default, not the record’s
Commercial use
the licence allows it
Specimen
Allosaurus fragilis Marsh, 1877

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Allosaurus fragilis · YPM:VP:YPM VP 004944

3D model

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

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

Keep going

What may have been alongside itAllosaurus through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Marsh 1877)