Camarasauridae
Camarasauridae is a family of sauropod dinosaurs. Among sauropods, camarasaurids are small to medium-sized, with relatively short necks. They are visually identifiable by a short skull with large nares, and broad, spatulate teeth filling a thick jaw. Based on cervical vertebrae and cervical rib biomechanics, camarasaurids most likely moved their necks in a vertical, rather than horizontal, sweeping motion, in contrast to most diplodocids.

James St. John · CC BY 2.0 · 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- Also called
- camarasauridPBDB
- Sits inside
- CamarasauromorphaPBDB
- Diet
- herbivorePBDB, for Sauropoda
- Life habit
- ground dwelling, gregariousPBDB, for Sauropoda
- Motility
- actively mobilePBDB, for Sauropoda
- Environment
- terrestrialPBDB, for Sauropoda
Time the record covers
At least 89 million years on record.
The record covers at least 161.5 Mya to 72.2 Mya. No occurrence read is dated outside 165.3 Mya to 66 Mya.
162 occurrences of Camarasauridae 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
162 occurrences- Middle Jurassic1%
- Late Jurassic93%
- Early Cretaceous6%
- Late Cretaceousunder 1%
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
16 formations
- Morrison Formation135
- Lourinhã Formation5
- El Castellar Formation3
- Kadzi Formation2
- Alcobaça Formation2
- Balabansai Formation1
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The named rock units Camarasauridae 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.
Camarasauridae and its relatives
Late JurassicWhere Camarasauridae and its relatives were recorded in the Late Jurassic.
Found in the same rock
398 taxa- Camarasaurus105 sites
- Allosaurus46 sites
- Stegosaurus39 sites
- Theropoda38 sites
- Diplodocus35 sites
- Apatosaurus32 sites
- Sauropoda22 sites
- Camptosaurus20 sites
- Glyptops18 sites
- Ornithopoda18 sites
- Allosaurus fragilis17 sites
- Goniopholis16 sites
- Testudines15 sites
- Crocodylia14 sites
- Mammalia14 sites
- Barosaurus13 sites
- Diplodocidae13 sites
- Opisthias13 sites
- Brachiosaurus12 sites
- Dinosauria11 sites
- Camarasaurus grandis10 sites
- Diplodocinae10 sites
- Actinopterygii9 sites
- Ceratosaurus9 sites
The Paleobiology Database records 146 sites for Camarasauridae, 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
90 references- Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A.23
- Biostratigraphy of dinosaurs in the Upper Jurassic Morrison Formation of the Western Interior, U.S.A.11
- Connely, 20027
- Vertebrate biostratigraphy of the Morrison Formation near Cañon City, Colorado7
- Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of the Carnegie Museum of Natural History7
- Marsh's Dinosaurs: The Collections from Como Bluff5
- Distribution and biochronology of Camarasaurus (Dinosauria, Sauropoda) from the Jurassic Morrison Formation of the Rocky Mountain region4
- Les dinosauriens du Portugal [The dinosaurs of Portugal]4
- New adult specimens of Camarasaurus lentus highlight ontogenetic variation within the species3
- Paleontology, taphonomy, and sedimentology of the Mygatt-Moore Quarry, a large dinosaur bonebed in the Morrison Formation, western Colorado—implications for Upper Jurassic dinosaur preservation modes2
- The first specimen of Camarasaurus (Dinosauria: Sauropoda) from Montana: the northernmost occurrence of the genus2
- A new specimen of Torvoaurus tanneri originally collected by Elmer Riggs2
Each of the 162 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. 78 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 content1
Picture of Camarasauridae
- Source
- Wikipedia/Commons
- Credit
- James St. John
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
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 itCamarasauromorpha through timeFormations of the Late JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1877