Nothosaurus
Nothosaurus is an extinct genus of sauropterygian reptile from the Triassic period, approximately 245–228 million years ago, with fossils being distributed throughout the former Tethys Ocean, from North Africa and Europe to China. It is the best known member of the nothosaur order.

Elke Wetzig at commons.wikipedia · CC BY-SA 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
- NothosauridaePBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- marinePBDB, for Sauropterygia
Time the record covers
At least 37 million years on record.
The record covers at least 243.43 Mya to 205.7 Mya. No occurrence read is dated outside 250.8 Mya to 201.4 Mya.
103 occurrences of Nothosaurus on record, most of them in the Middle Triassic. 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
103 occurrences- Early Triassicunder 1%
- Middle Triassic94%
- Late Triassic6%
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
21 formations
- Jena Formation · Muschelkalk Group7
- Erfurt Formation · Keuper Group6
- Karlstadt Formation · Muschelkalk Group4
- Vossenveld Formation · Muschelkalk Group3
- Guanling Formation3
- Muschelkalk Formation2
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The named rock units Nothosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 60 occurrences have no formation on record, which is common for older literature.
Nothosaurus and its relatives
Middle TriassicWhere Nothosaurus and its relatives were recorded in the Middle Triassic.
Found in the same rock
648 taxa- Placodus gigas9 sites
- Cyamodus7 sites
- Simosaurus gaillardoti6 sites
- Hybodus5 sites
- Placodus5 sites
- Saurichthys5 sites
- Coenothyris vulgaris4 sites
- Cyamodontoidea4 sites
- Gyrolepis4 sites
- Acrodus3 sites
- Colobodus3 sites
- Entolium discites3 sites
- Hoernesia socialis3 sites
- Mastodonsaurus giganteus3 sites
- Myophoria vulgaris3 sites
- Neoschizodus laevigatus3 sites
- Placunopsis ostracina3 sites
- Actinistia2 sites
- Actinopterygii2 sites
- Anarosaurus heterodontus2 sites
- Aspiduriella scutellata2 sites
- Bakevellia costata2 sites
- Catella impressa2 sites
- Ceratites2 sites
The Paleobiology Database records 74 sites for Nothosaurus, 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
38 references- A revision of the genus Nothosaurus (Reptilia: Sauropterygia) from the Germanic Triassic, with comments on the status of Conchiosaurus clavatus56
- Osteology of Simosaurus gaillardoti and the relationships of stem-group Sauropterygia6
- Stratigraphical studies on the Triassic vertebrate fossils from Wadi Raman, Israel3
- New findings of isolated remains of Triassic reptiles from Northeastern Italy2
- Lang and Huene, 19522
- Die Schwäbischen Trias-Saurier nach dem Material der Kgl. Naturalien-Sammlung in Stuttgart zusammengestellt [Swabian Triassic dinosaurs based on the material in the Royal Natural History Collection compiled in Stuttgart]2
- A partial skeleton and isolated humeri of Nothosaurus (Reptilia: Eosauropterygia) from Winterswijk, The Netherlands1
- Vertebrate remains from the Lower Muschelkalk of Raciborowice Górne (North-Sudetic Basin, SW Poland)1
- Faunal lists from Muschelkalk Museum, Ingelfingen, Germany1
- A new species of Nothosaurus from the early Middle Triassic of Guizhou, China1
- A new species of the sauropterygian genus Nothosaurus from the Lower Muschelkalk of Winterswijk, The Netherlands1
- The prosauropod dinosaur Plateosaurus Meyer, 1837 (Saurischia: Sauropodomorpha; Upper Triassic). II. Notes on the referred species1
Each of the 103 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. 26 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 content3
Picture of Nothosaurus
- Source
- Wikipedia/Commons
- Credit
- Elke Wetzig at commons.wikipedia
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Nothosaurus mirabilis · am:paleontology:836801
3D model
- Source
- Sketchfab
- Credit
- dinoguy263allo
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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
- Source
- Wikipedia, “Nothosaurus”
- 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 itNothosauridae through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Münster 1834