# Francosuchus

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Extinct genus of reptiles

Francosuchus Temporal range: Late Triassic, 231–228 Ma PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: †Phytosauria Genus: †Francosuchus Kuhn, 1933 Type species †Francosuchus broilii Kuhn, 1933 Species †F. broilii Kuhn, 1933 †F. latus Kuhn, 1933

***Francosuchus*** is a [dubious](/source/Nomen_dubium) [genus](/source/Genus) of probably [basal](/source/Basal_(phylogenetics)) [phytosaur](/source/Phytosaur) known from the [Late Triassic](/source/Late_Triassic) (late [Carnian](/source/Carnian) stage) of [Bavaria](/source/Bavaria), southern [Germany](/source/Germany). It was named by [Oskar Kuhn](/source/Oskar_Kuhn) in [1933](/source/1933_in_paleontology) and the [type species](/source/Type_species) is ***Francosuchus broilii***. In the same article Kuhn also named a second species ***Francosuchus latus***. Both species were known solely from their [holotypes](/source/Holotype), two partial [skulls](/source/Skull) that were housed at the [Bavarian State Collection for Palaeontogy and Geology](https://en.wikipedia.org/w/index.php?title=Bavarian_State_Collection_for_Palaeontogy_and_Geology&action=edit&redlink=1). Both specimens were collected at Ebrach Quarry, bed number 13 from the late Carnian-aged [Blasensandstein Member](/source/Blasensandstein_Member) of the [Hassberge Formation](/source/Hassberge_Formation).[1] As the holotypes were destroyed during [World War II](/source/World_War_II) and poorly documented, *Francosuchus* and its species are usually considered to be [nomina dubia](/source/Nomen_dubium).[2]

Kuhn (1936) described and named a third species of this genus, *[Francosuchus angustifrons](/source/Francosuchus_angustifrons)*, on a basis of another skull from the same quarry, bed number 9.[3] This species was recently reassigned to *[Paleorhinus](/source/Paleorhinus)*, because it shares unique [synapomorphies](/source/Synapomorphies) with *P. bransoni* (the type species of *Paleorhinus*), and a species-level phylogenetic analysis of phytosaurs found the species to be [sister taxa](/source/Sister_taxon).[2] [Friedrich von Huene](/source/Friedrich_von_Huene) (1939) described and named a fourth species, *[Francosuchus trauthi](/source/Francosuchus_trauthi)*. It was synonymized with *Paleorhinus*, but a re-description of the species by Butler (2013) found no evidence to support the synonymy, or even a phytosaurian identification. Although it is based solely on a [rostrum](/source/Rostrum_(anatomy)) fragment, *"F." trauthi* was found to possess a unique combination of characters that distinguish it from all other Triassic [tetrapods](/source/Tetrapod). Thus it was reassigned to a new genus, *[Dolerosaurus](/source/Dolerosaurus)*,[4] referable to [Tetrapoda](/source/Tetrapoda) *[incertae sedis](/source/Incertae_sedis)*.[2]

## References

1. **[^](#cite_ref-Francosuchus_1-0)** Kuhn, O. (1933). Labyrinthodonten und Parasuchier aus dem mittleren Keuper von Ebrach in Oberfranken. *Neues Jahrbuch für Mineralogie, Geologie, und Paläontologie, Beilage-Band, Abteilung B*, **69**:94-144.

1. ^ [***a***](#cite_ref-StockerButler13_2-0) [***b***](#cite_ref-StockerButler13_2-1) [***c***](#cite_ref-StockerButler13_2-2) Stocker, M. R.; Butler, R. J. (2013). "Phytosauria". *Geological Society, London, Special Publications*. **379** (1): 91–117. [Bibcode](/source/Bibcode_(identifier)):[2013GSLSP.379...91S](https://ui.adsabs.harvard.edu/abs/2013GSLSP.379...91S). [doi](/source/Doi_(identifier)):[10.1144/SP379.5](https://doi.org/10.1144%2FSP379.5). [S2CID](/source/S2CID_(identifier)) [219192243](https://api.semanticscholar.org/CorpusID:219192243).

1. **[^](#cite_ref-Kuhn36_3-0)** Kuhn, O. (1936). Weitere Parasuchier und Labyrinthodonten aus dem Blasensandstein des mittleren Keuper von Ebrach. *Palaeontographica, Abteilung A*, **83**:61-98.

1. **[^](#cite_ref-Dolerosaurus_4-0)** Butler, R. J. (2013). "'*Francosuchus' trauthi* is not *Paleorhinus*: Implications for Late Triassic vertebrate biostratigraphy". *Journal of Vertebrate Paleontology*. **33** (4): 858–864. [doi](/source/Doi_(identifier)):[10.1080/02724634.2013.740542](https://doi.org/10.1080%2F02724634.2013.740542). [S2CID](/source/S2CID_(identifier)) [86386615](https://api.semanticscholar.org/CorpusID:86386615).

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v t e Phytosauria Kingdom: Animalia Phylum: Chordata Class: Sauropsida Clade: Archosauromorpha Clade: Crurotarsi Sauropsida see Sauropsida Archosauromorpha see Archosauromorpha Phytosauria see below↓ Phytosauria Phytosauria Calamosuchus Diandongosuchus Heteropelta? Parasuchidae Arganarhinus Ebrachosuchus Paleorhinus Parasuchus Wannia Mystriosuchinae / Phytosauridae Angistorhinus Brachysuchus Colossosuchus Jupijkam Protome Rutiodon Volcanosuchus Leptosuchomorpha Leptosuchus Pravusuchus Smilosuchus Mystriosuchini Angistorhinopsis Machaeroprosopus Mystriosuchus Nicrosaurus Redondasaurus Nomina dubia Belodon Centemodon Clepsysaurus? Coburgosuchus Compsosaurus Francosuchus Heterodontosuchus Mesorhinosuchus Omosaurus? Palaeoctonus? Phytosaurus Rileyasuchus Suchoprion Termatosaurus? Category

Taxon identifiers Francosuchus Wikidata: Q16753003 GBIF: 4817981 IRMNG: 1167148 Paleobiology Database: 170550

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Adapted from the Wikipedia article [Francosuchus](https://en.wikipedia.org/wiki/Francosuchus) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Francosuchus?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.