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Stomatosuchidae
Stomatosuchidae is an extinct family of neosuchian crocodylomorphs. It is defined as the most inclusive clade containing ''Stomatosuchus inermis'' but not ''Notosuchus terrestris'', ''Simosuchus clarki'', ''Araripesuchus gomesii'', ''Baurusuchus pachecoi'', ''Peirosaurus torminni'', or ''Crocodylus niloticus''. Two genera are known to belong to Stomatosuchidae: ''Stomatosuchus'', the type genus, and ''Laganosuchus''. Fossils have been found from Egypt, Morocco, and Niger. Both lived during the Cenomanian stage of the Late Cretaceous. The skulls of stomatosuchids are said to be platyrostral because they have unusually flattened, elongate, duck-shaped craniums with U-shaped jaws.〔 This platyrostral condition is similar to what is seen in the "nettosuchid" ''Mourasuchus'', which is not closely related to stomatosuchids as it is a more derived alligatoroid that existed during the Miocene.
Unlike ''Mourasuchus'', stomatosuchids have jaws that are less strongly bowed. Additionally, the glenoid is rounded rather than cupped at the posterior end of the jaw, and the retroarticular process is straight rather than dorsally curving like in ''Mourasuchus'' and other extant crocodylians.〔
The only existing specimens of stomatosuchids belong to the recently described genus ''Laganosuchus'', which is known from two species, ''L. thaumastos'' and ''L. maghrebensis'' from the Echkar Formation in Niger and the Kem Kem Beds in Morocco, respectively. The genus ''Stomatosuchus'' is known only from a holotype skull collected from the Bahariya Formation in Egypt, which was destroyed in World War II with the bombing of the Munich Museum.〔Stromer, E. (1925) "Ergebnisse der Forschungsreisen Prof. E. Stromers in den Wüsten Ägyptens. II. Wirbeltier-Reste der Baharije-Stufe (unterstes Cenoman). 7. ''Stomatosuchus inermis'' Stromer, ein schwach bezahnter Krokodilier und 8. Ein Skelettrest des Pristiden ''Onchopristis numidus'' Huag sp.". ''Abhandlungen der königlichen Bayerischen Akademie der Wissenschaften, Mathematisch-Physikalische Klasse'' 30: 1–22.〕 Because ''Stomatosuchus'' is known only from brief accounts by Ernst Stromer and Franz Nopcsa (1926) and no additional material has ever been found, the genus remains enigmatic.〔〔Stromer, E. (1936) "Ergebnisse der Forschungsreisen Prof. E. Stromers in den Wüsten Ägyptens. II. Wirbeltier-Reste der Baharije-Stufe (unterstes Cenoman). VII. Baharije-Kessel und -Stufe mit deren Fauna und Flora. Eine ergänzende Zusammenfassung". ''Abhandlungen der königlichen Bayerischen Akademie der Wissenschaften, Mathematisch-Physikalische Klasse'' 33: 1–102.〕
The genus ''Aegyptosuchus'' was once considered to be a member of Stomatosuchidae, but it is now placed within its own family, Aegyptosuchidae.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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