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Dolerosaurus Temporal range: Late Triassic, 231–228 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Romeriida
Clade:	Diapsida
Genus:	†Dolerosaurus Butler, 2013
Type species
†Francosuchus trauthi Huene, 1939

Dolerosaurus is an extinct genus of diapsid known from the early Late Triassic (late Carnian stage) upper Lunz Formation of Austria. Dolerosaurus was first named by Richard J. Butler in 2013 and the type species is Francosuchus trauthi.^[1]

Discovery and naming

In 1939 Friedrich von Huene named a new species of the phytosaur Francosuchus, F. trauthi, based upon a small fragment of rostrum.^[2] It was at some point later referred to Paleorhinus, but in 2013, it was renamed to the new genus Dolerosaurus.^[1] Unfortunately very little can be said about Dolerosaurus given that its holotype fossil is so small (c.5 centimetres (2.0 in) long) and the known remains are so scant. Dolerosaurus was referred to Phytosauria in 1939, but after subsequent analyses in 2013, it was reclassified as a basal diapsid.

References

^ ^a ^b Butler, R. J. (2013). "'Francosuchus trauthi is not Paleorhinus: Implications for Late Triassic vertebrate biostratigraphy". Journal of Vertebrate Paleontology. 33 (4): 858–864. doi:10.1080/02724634.2013.740542. S2CID 86386615.
^ Ein primitiver Phytosaurier in der jüngeren nordost-alpinen Trias. - Zentralblatt für Mineralogie, Geologie und Paläontologie, Abteilung B 1939:139-144. - Friedrich von Huene - 1939.

Sauropsida (Reptilia sensu lato)

Kingdom: Animalia
Phylum: Chordata
Superclass: Tetrapoda
Clade: Amniota

Tetrapodomorpha

- see Tetrapodomorpha

Reptiliomorpha

see Reptiliomorpha
Sauropsida	see below↓

Sauropsida

†Australothyris †Erpetonyx †Microleter
†Acleistorhinidae	Acleistorhinus Carbonodraco Colobomycter Delorhynchus Feeserpeton Karutia Klastomycter
†Bolosauridae	Belebey Bolosaurus Eudibamus
†Mesosauria	Brazilosaurus Mesosaurus Stereosternum
†Millerettidae	Broomia Heleophilus Milleretta Millerosaurus Milleropsis Nanomilleretta
†Procolophonia	see Procolophonia
Diapsida	see below↓

†Younginidae

- see Choristodera

†Ichthyosauromorpha

- see Ichthyosauromorpha

†Sauropterygia

- see Sauropterygia

†Thalattosauria

- see Thalattosauria

Sauria
(Crown-Reptilia)

Lepidosauromorpha

- see Lepidosauromorpha
Includes Lepidosauria
- includes rhynchocephalians and squamates

Archelosauria

Archosauromorpha	see Archosauromorpha Includes Archosauria includes birds and crocodilians
Pantestudines	see Pantestudines Includes Testudines turtles