| Homoeosaurus | |
|---|---|
 | |
| Homoeosaurus maximiliani | |
Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Rhynchocephalia |
| Suborder: | Sphenodontia |
| Infraorder: | Eusphenodontia |
| Clade: | Neosphenodontia |
| Genus: | †Homoeosaurus von Meyer, 1847 |
| Type species | |
| †H. maximiliani von Meyer, 1847 | |
| Otherspecies | |
Homoeosaurus is anextinctgenus ofrhynchocephalianreptile, known from theLate Jurassic-earliestCretaceous of Europe, with specimens being reported from France (Canjuers Lagerstatte), England (Purbeck Group) and Germany (Solnhofen Limestone). Several species have been described within the genus, based on varying proportions of the limb bones to the body length based on the presacral vertebrae. Specimen C.M.6438 ofH. maximiliani from Germany has a total length of around 17 centimetres (6.7 in), with a skull length of about 1.7 centimetres (0.67 in). In comparison to other rhynchocephalians, the limbs are proportionally long.[1] Recent studies have classifiedHomoeosaurus as a member of Neosphenodontia, with some studies including it as part of the clade Leptorhynchia, also includingsapheosaurs,pleurosaurs,Kallimodon andVadasaurus.[2] Despite being found in aquatic deposits, it is suggested to have been terrestrial.[3] Analysis of its limb bone morphology suggests that it was probably capable of climbing and may have climbed trees and/or rocky surfaces at least some of the time.[4] It is thought to have been acarnivore/insectivore.[5] One specimen was found as stomach contents of the fishBelonostomus.[6]
Cladogram after Beccari et al. 2025:[4]
| Rhynchocephalia |
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