Pachypleurosauroidea

Nobu Tamura ( http://spinops.blogspot.com ) · CC BY 2.5 · via Wikidata/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
- EosauropterygiaPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- marinePBDB, for Sauropterygia
Time the record covers
At least 7.5 million years on record.
The record covers at least 247 Mya to 239.48 Mya. No occurrence read is dated outside 250.8 Mya to 237 Mya.
58 occurrences of Pachypleurosauroidea 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
58 occurrencesThese 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
26 formations
- Besano Formation13
- Falang Formation5
- Guanling Formation4
- Cassina Formation4
- Vossenveld Formation · Muschelkalk Group3
- Jialingjiang Formation2
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The named rock units Pachypleurosauroidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 further formations hold fewer occurrences each and are not listed. 5 occurrences have no formation on record, which is common for older literature.
Pachypleurosauroidea and its relatives
Middle TriassicWhere Pachypleurosauroidea and its relatives were recorded in the Middle Triassic.
Found in the same rock
244 taxa- Serpianosaurus mirigiolensis13 sites
- Neusticosaurus6 sites
- Macrocnemus bassanii5 sites
- Nothosaurus5 sites
- Ticinolepis longaeva5 sites
- Keichousaurus4 sites
- Saurichthys4 sites
- Anarosaurus heterodontus3 sites
- Dactylosaurus gracilis3 sites
- Gyrolepis3 sites
- Hybodus3 sites
- Ichthyosauria3 sites
- Lariosaurus3 sites
- Acrodus2 sites
- Atopodentatus unicus2 sites
- Ceresiosaurus2 sites
- Ctenognathichthys bellottii2 sites
- Cyamodus hildegardis2 sites
- Eoeugnathus bellottii2 sites
- Eosemionotus2 sites
- Eusaurosphargis2 sites
- Habroichthys minimus2 sites
- Keichousaurus hui2 sites
- Lariosaurus balsami2 sites
The Paleobiology Database records 54 sites for Pachypleurosauroidea, 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
36 references- A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of Monte San Giorgio, Switzerland13
- Pachypleurosaurs (Reptilia: Sauropterygia) from the Lower Muschelkalk, and a review of the Pachypleurosauroidea4
- Middle Triassic Xingyi Fauna: Showing turnover of marine reptiles from coastal to oceanic environments3
- New holostean fishes (Actinopterygii: Neopterygii) from the Middle Triassic of the Monte San Giorgio (Canton Ticino, Switzerland)3
- The nothosaur Pachypleurosaurus and the origin of plesiosaurs3
- A partial skeleton and isolated humeri of Nothosaurus (Reptilia: Eosauropterygia) from Winterswijk, The Netherlands2
- Postcranial morphology of a basal Pistosauroidea (Sauropterygia) from the Lower Muschelkalk of Winterswijk, The Netherlands1
- A new pachypleurosaur (Reptilia: Sauropterygia) from the lower Middle Triassic of southwestern China and the phylogenetic relationships of Chinese pachypleurosaurs1
- The kingdom of Tethys. The fossilized world of Triassic vertebrates from the Kamniško-Savinjske Alps1
- A new species of Macrocnemus (Reptilia: Protorosauria) from the Middle Triassic of southwestern China and its palaeogeographical implication1
- Comparative osteology of Mastodonsaurus giganteus (Jaeger, 1828) from the Middle Triassic (Lettenkeuper: Longobardian) of Germany (Baden-Württemberg, Bayern, Thüringen)1
- A Middle Triassic vertebrate fauna from the Jilh Formation, Saudi Arabia1
Each of the 58 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. 24 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 Pachypleurosauroidea
- Source
- Wikidata/Commons
- Credit
- Nobu Tamura ( http://spinops.blogspot.com )
- Licence
- CC BY 2.5
- Commercial use
- the licence allows it
No 3D scan of Pachypleurosauroidea was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itEosauropterygia through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Huene 1956