Eusaurosphargis
Eusaurosphargis is an extinct genus of a diapsid reptile, known from the Middle Triassic Besano Formation of northern Italy and Prosanto Formation of south-eastern Switzerland. It contains a single species, Eusaurosphargis dalsassoi. It was a small reptile, measuring 20 cm (7.9 in) long.

Torsten M. Scheyer, James M. Neenan, Timea Bodogan, Heinz Furrer, Christian Obrist & Mathieu Plamondon (2017) · 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
- HelveticosauridaePBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Diapsida
Time the record covers
At least 2.9 million years on record.
The record covers at least 244.4 Mya to 241.464 Mya. No occurrence read is dated outside 247 Mya to 237 Mya.
4 occurrences of Eusaurosphargis 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
4 occurrences- Middle Triassic100%
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
3 formations
- Vossenveld Formation · Muschelkalk Group2
- Besano Formation1
- Prosanto Formation1
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The named rock units Eusaurosphargis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Eusaurosphargis and its relatives
Middle TriassicWhere Eusaurosphargis and its relatives were recorded in the Middle Triassic.
Found in the same rock
41 taxa- Anarosaurus heterodontus2 sites
- Amotosaurus rotfeldensis1 site
- Besania schaufelbergeri1 site
- Bifungites1 site
- Brachychirotherium paraparvum1 site
- Capitosauroides1 site
- Chirotherium peabodyi1 site
- Clytiopsis argentoratense1 site
- Coelurosaurichnus ratumensis1 site
- Cyamodus hildegardis1 site
- Cymatosaurus1 site
- Dactylosaurus gracilis1 site
- Ducanichthys aculeatus1 site
- Eoeugnathus megalepis1 site
- Judicarites arietiformis1 site
- Judicarites euryomphalus1 site
- Kouphichnium1 site
- Lariosaurus juvenilis1 site
- Lariosaurus vosseveldensis1 site
- Lariosaurus winkelhorsti1 site
- Macrocnemus bassanii1 site
- Marcopoloichthys furreri1 site
- Nothosaurus1 site
- Nothosaurus marchicus1 site
The Paleobiology Database records 4 sites for Eusaurosphargis, 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
3 references- Postcranial morphology of a basal Pistosauroidea (Sauropterygia) from the Lower Muschelkalk of Winterswijk, The Netherlands2
- A new, exceptionally preserved juvenile specimen of Eusaurosphargis dalsassoi (Diapsida) and implications for Mesozoic marine diapsid phylogeny1
- Eusaurosphargis dalsassoi n. gen. n. sp., a new, unusual diapsid reptile from the Middle Triassic of Besano (Lombardy, N Italy)1
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 content1
Picture of Eusaurosphargis
- Source
- Wikipedia/Commons
- Credit
- Torsten M. Scheyer, James M. Neenan, Timea Bodogan, Heinz Furrer, Christian Obrist & Mathieu Plamondon (2017)
- Licence
- CC BY-SA 4.0
- 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 itHelveticosauridae through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Nosotti and Rieppel 2003