Ornitholestes
Ornitholestes is a small theropod dinosaur of the late Jurassic of Western Laurasia.

Etemenanki3 · CC BY-SA 4.0 · 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
- CompsognathidaePBDB
- Diet
- carnivorePBDB, for Coelurosauria
- Life habit
- ground dwelling, solitaryPBDB, for Theropoda
- Motility
- actively mobilePBDB, for Theropoda
- Environment
- terrestrialPBDB, for Theropoda
- Length
- 2 mWikidata
Time the record covers
At most 15 million years on record.
Every occurrence read is dated to somewhere between 157.9 Mya and 143.1 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
4 occurrences of Ornitholestes 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
4 occurrences- Late Jurassic100%
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
Loading coastlines…
The named rock units Ornitholestes has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Ornitholestes and its relatives
Late JurassicWhere Ornitholestes and its relatives were recorded in the Late Jurassic.
Found in the same rock
131 taxa- Camarasaurus4 sites
- Apatosaurus3 sites
- Brachiosaurus3 sites
- Camptosaurus3 sites
- Diplodocus3 sites
- Allosaurus fragilis2 sites
- Allosaurus jimmadseni2 sites
- Ankylosauria2 sites
- Barosaurus2 sites
- Ceratodus2 sites
- Ceratosaurus2 sites
- Coelurus2 sites
- Dinochelys whitei2 sites
- Diplodocidae2 sites
- Dryosaurus altus2 sites
- Eutretauranosuchus delfsi2 sites
- Glyptops2 sites
- Mammalia2 sites
- Nanosaurus agilis2 sites
- Ornithopoda2 sites
- Sauropoda2 sites
- Stegosauridae2 sites
- Theropoda2 sites
- Unio2 sites
The Paleobiology Database records 4 sites for Ornitholestes, 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
4 references- A New Basal Diplodocoid Species, Amphicoelias brontodiplodocus from the Morrison Formation, Big Horn Basin, Wyoming, with Taxonomic Reevaluation of Diplodocus, Apatosaurus, Barosaurus and Other Genera1
- Paleoecology of the Quarry 9 vertebrate assemblage from Como Bluff, Wyoming (Morrison Formation, Late Jurassic)1
- Theropods of Dry Mesa Quarry (Morrison Formation, Late Jurassic), Colorado, with emphasis on the osteology of Torvosaurus tanneri1
- Ornitholestes hermanni, a new compsognathoid dinosaur from the Upper Jurassic1
Each of the 4 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. 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 Ornitholestes
- Source
- Wikipedia/Commons
- Credit
- Etemenanki3
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- Sammy the Citipati
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
MorphoSource 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 itCompsognathidae through timeFormations of the Late JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Osborn 1903