Zanclodon
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| Zanclodon Temporal range: Middle Triassic,
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| Holotype of Z. laevis | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | incertae sedis |
| Genus: | †Zanclodon Plieninger, 1847 |
| Type species | |
| †Zanclodon laevis (Plieninger, 1846)
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| Synonyms | |
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Zanclodon ("scythe tooth") is an extinct genus of archosauriform from the Erfurt Formation[1] in southern Germany.[2] It was once a wastebasket taxon until a taxonomic revision by Schoch (2011) left only the paratype (SMNS 6045) within Zanclodon laevis proper.[3] The type species is Z. laevis.
Discovery and naming
[edit]
The paratype, SMNS 56045, a maxilla with teeth, was discovered in the Gaildorf Alumn Mine in southern Germany.[3] Zanclodon was originally named Smilodon by Plieninger (1846), but this name had previously been used for the saber-toothed cat (a preoccupied name), prompting Plieninger to erect the replacement name Zanclodon in 1847.[4] A paralectotype was also assigned to Z. laevis: SMNS 6045a, a loose germ tooth.[3]
Z. plieningeri was named by Fraas in 1896,[5] but it became a junior synonym of Z. laevis shortly after publication as they are both based on the same specimen, SMNS 6045.[6]
Many species were previously lumped under the Zanclodon genus, but currently only the type species, Z. laevis, is accepted to belong to the genus.[3]
Classification
[edit]Zanclodon was formerly placed in the Teratosauridae,[7] within the Theropoda, and at times, plateosaurid material was mistakenly referred to Zanclodon.[6] It is now considered to have been an indeterminate archosauriform.[6]
Species
[edit]- Z. laevis (Plieninger, 1846) [originally "Smilodon"] (type)
- Z. crenatus (Plieninger, 1846) [originally "Smilodon"] = nomen dubium at Archosauromorpha indeterminate[8][9]
- Z. bavaricus (Fraas, 1894 vide Sandberger, 1894) = Sauropodomorpha incertae sedis[6]
- Z. plieningeri (Fraas, 1896) = junior synonym of Z. laevis[6]
- Z. arenaceus (Fraas, 1896) = Calamosuchus arenaceus, a probable early-diverging phytosaur[10][11][12]
- Z. cambrensis (Newton, 1899) = Newtonsaurus cambrensis, a large possibly coelophysoid theropod dinosaur[13]
- Z. schutzii (Fraas, 1900) = Batrachotomus[14]
- Z. silesiacus (Jaekel, 1910) = nomen dubium classified as Archosauromorpha indet.[8][9]
References
[edit]- ^ Hagdorn, H. & Mutter, R.J. (2011). The vertebrate fauna of the Lower Keuper Albertibank (Erfurt Formation, Middle Triassic) in the vicinity of Schwäbisch Hall (Baden-Württemberg, Germany). Palaeodiversity 4: 223–243.
- ^ PaleoBiology Database: Zanclodon, basic info
- ^ a b c d Schoch, R.R. (2011). New archosauriform remains from the German Lower Keuper. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 260: 87–100. doi:10.1127/0077-7749/2011/0133.
- ^ Plieninger, T. (1846). Über ein neues Sauriergenus und die Einreihung der Saurier mit flachen, schneidenden Zähnen in Eine Familie [On a new saurian genus and incorporating the saurian with flat, cutting teeth into a family]. Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg 2: 148-154.
- ^ Fraas, E. (1896). Die Schwäbischen Trias-Saurier nach dem Material der Kgl. Naturalien-Sammlung in Stuttgart zusammengestellt [Swabian Triassic dinosaurs based on the material in the Royal Natural History Collection compiled in Stuttgart]. Festgabe des Königlichen Naturalien-Cabinets In Stuttgart zur 42 Versammlung der Deutschen geologischen Gesellschaft in Stuttgart, August 1896. E. Schweizerbart'sche Verlag-handlung (E. Koch), Stuttgart 1-18
- ^ a b c d e Galton, P.M. (2001). The prosauropod dinosaur Plateosaurus Meyer, 1837 (Saurischia: Sauropodomorpha; Upper Triassic). II. Notes on the referred species. Revue de Paléobiologie, Genève 20(2): 435–502.
- ^ Fraas, E. (1900). Zanclodon schützii n. sp. aus dem Trigonodusdolomit von Hall [Zanclodon schützii n. sp. from the Trigonodus-dolomite of Halle]. Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg 56: 510–513.
- ^ a b Carrano, M.T.; Benson, R.B.J.; & Sampson, S.D. (2012). "The phylogeny of Tetanurae (Dinosauria: Theropoda)". Journal of Systematic Palaeontology 10(2): 211–300
- ^ a b Skawiński, T.; Ziegler, M.; Czepiński, Ł.; Szermański, M.; Tałanda, M.; Surmik, D.; Niedźwiedzki, G. (2017). "A re-evaluation of the historical 'dinosaur' remains from the Middle-Upper Triassic of Poland". Historical Biology. 27 (4): 442–472. doi:10.1080/08912963.2016.1188385. S2CID 133166493.
- ^ Hungerbühler, A. (2001). The status and phylogenetic relationships "Zanclodon" arenaceus: the earliest known phytosaur? Paläontologische Zeitschrift 75(1): 97–112.
- ^ Schoch, R.R. (2002). Stratigraphie und Taphonomie wirbeltierreicher Schichten im Unterkeuper (Mitteltrias) von Vellberg (SW-Deutschland). Stuttgarter Beiträge zur Naturkunde (B) 318: 1–30.
- ^ Sues, Hans-Dieter; Schoch, Rainer R. (4 December 2025). "Synopsis of the Triassic reptiles from Germany". Fossil Record. 28 (2): 411–483. doi:10.3897/fr.28.164405. ISSN 2193-0074.
- ^ Evans, Owain; Howells, Cindy; Wintle, Nathan; Benton, Michael J. (11 September 2025). "Re-assessment of a large archosaur dentary from the Late Triassic of South Wales, United Kingdom". Proceedings of the Geologists' Association 101142. doi:10.1016/j.pgeola.2025.101142. hdl:1983/8affce5d-a313-4b23-92d1-ef3f4d383816. ISSN 0016-7878.
- ^ Jaekel, O. (1910). Ueber einen neuen Belodonten aus dem Buntsandstein von Bernburg [On a new belodontid from the Buntsandstein of Bernburg]. Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin 1910 (5): 197-229
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