Stegosauridae
Stegosauria is a group of herbivorous ornithischian dinosaurs that lived during the Jurassic and early Cretaceous periods. Stegosaurian fossils have been found mostly in the Northern Hemisphere, Africa and South America. Although their geographical origins are unclear, the earliest unequivocal stegosaurians are known from the Middle Jurassic, including Adratiklit, Bashanosaurus, Isaberrysaura and Thyreosaurus.

Zhangzhugang · CC BY 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
- StegosauriaPBDB
- Diet
- herbivorePBDB, for Ornithischia
- Life habit
- ground dwelling, gregariousPBDB, for Ornithischia
- Motility
- actively mobilePBDB, for Ornithischia
- Environment
- terrestrialPBDB, for Ornithischia
Time the record covers
At least 61 million years on record.
The record covers at least 161.5 Mya to 100.5 Mya. No occurrence read is dated outside 174.7 Mya to 93.9 Mya.
193 occurrences of Stegosauridae 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
193 occurrences- Middle Jurassic7%
- Late Jurassic86%
- Early Cretaceous7%
- 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
30 formations
- Morrison Formation98
- Tendaguru Formation27
- Villar del Arzobispo Formation15
- Lourinhã Formation6
- Shaximiao Formation · Chongqing Group6
- Alcobaça Formation3
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The named rock units Stegosauridae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 further formations hold fewer occurrences each and are not listed. 7 occurrences have no formation on record, which is common for older literature.
Stegosauridae and its relatives
Late JurassicWhere Stegosauridae and its relatives were recorded in the Late Jurassic.
Found in the same rock
485 taxa- Stegosaurus66 sites
- Camarasaurus46 sites
- Allosaurus35 sites
- Sauropoda32 sites
- Theropoda31 sites
- Apatosaurus28 sites
- Diplodocus27 sites
- Kentrosaurus aethiopicus26 sites
- Camptosaurus19 sites
- Glyptops17 sites
- Goniopholis17 sites
- Ornithopoda17 sites
- Dacentrurus16 sites
- Allosaurus fragilis14 sites
- Mammalia14 sites
- Brachiosaurus13 sites
- Crocodylia13 sites
- Giraffatitan brancai13 sites
- Dacentrurus armatus12 sites
- Dinosauria12 sites
- Pterosauria12 sites
- Barosaurus11 sites
- Opisthias11 sites
- Diplodocidae10 sites
The Paleobiology Database records 179 sites for Stegosauridae, 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
101 references- Kentrurosaurus aethiopicus. Die Stegosaurier-Funde vom Tendaguru, Deutsch-Ostafrika [Kentrurosaurus aethiopicus. The stegosaur discovery from Tendaguru, German East Africa]23
- Biostratigraphy of dinosaurs in the Upper Jurassic Morrison Formation of the Western Interior, U.S.A.13
- Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A.11
- Systematics and phylogeny of Stegosauria (Dinosauria: Ornithischia)9
- New stegosaurian (Ornithischia, Thyreophora) remains from Jurassic-Cretaceous transition beds of Valencia province (Southwestern Iberian Range, Spain)6
- Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of the Carnegie Museum of Natural History5
- Osteology of the armored Dinosauria in the United States National Museum, with special reference to the genus Stegosaurus5
- Evolyutsiya ctegozavrov (Dinosauria; Ornithischia) [Evolution of the stegosaurs (Dinosauria; Ornithischia)]4
- Vertebrate biostratigraphy of the Morrison Formation near Cañon City, Colorado4
- Les dinosauriens du Portugal [The dinosaurs of Portugal]4
- Nuevos restos fósiles del estegosaurio Dacentrurus en el yacimiento Barrihonda-El Humero de Riodeva (Teruel, España) [New fossil remains of the stegosaur Dacentrurus in the Barrihondo-El Humero locality of Riodeva (Teruel, Spain)]3
- Marsh's Dinosaurs: The Collections from Como Bluff3
Each of the 193 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. 89 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 Stegosauridae
- Source
- Wikipedia/Commons
- Credit
- Zhangzhugang
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
The description on this site
- Source
- Wikipedia, “Stegosauria”
- 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 itStegosauria through timeFormations of the Late JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Marsh 1880