Thalattosuchia

Reconstruction of Geosaurus giganteus scaled to a human diver, from Young et al. (2012).

Belongs within: Neosuchia.

The Thalattosuchia are a clade of marine crocodyliforms known from the Jurassic. Basal members of the clade had an extremely long and tubular hyperdentate snout though this became striking modified in some derived members of the clade (Gasparini et al. 2006).

<==Thalattosuchia
    |--Crocodileimus [Crocodileimidae]B93
    |    `--C. robustus Jourdan 1871B93
    |--TeleosauridaeSF03
    |    |--MachimosaurusLB02
    |    |--Pelagosaurus Brown 1841LB02, SF03
    |    |    `--P. typusGPS06
    |    |--SteneosaurusLB02
    |    |    |--S. bollensis (Jaeger 1828)B93
    |    |    |--S. brevior Blake 1876B93
    |    |    `--S. gracilirostris Westphal 1961B93
    |    `--Teleosaurus Deslongchamps 1866D07
    |         |--T. chapmanniD07
    |         |--T. hastiferD07
    |         `--T. mandelslohiD07
    `--MetriorhynchidaeGPS06
         |  i. s.: TeleidosaurusB93
         |           |--T. bathonicus (Mercier 1933)B93
         |           |--T. calvadosi (Eudes-Deslongchamps 1866)B93
         |           `--T. gaudryi Collot 1905B93
         |--Metriorhynchus Meyer 1830GPS06, D07
         |    |--M. casamiquelaiGPS06
         |    |--M. moreliD07
         |    `--M. superciliosusGPS06
         `--+--DakosaurusGPS06
            |    |--D. andiniensisGPS06
            |    `--D. maximus (Plieninger 1846)B93
            `--Geosaurus Cuvier 1842GPS06, D07
                 |--G. araucanensisGPS06
                 |--G. cynodus Gervais 1867–1869C07
                 |--G. giganteusD07
                 |--G. gracilisD07
                 |--G. suevicusGPS06
                 `--G. vignaudiD07

*Type species of generic name indicated

References

[B93] Benton, M. J. 1993. Reptilia. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 681–715. Chapman & Hall: London.

[C07] Case, E. C. 1907. Revision of the Pelycosauria of North America. Carnegie Institute of Washington Publication 55: 1–176, 35 pls.

[D07] Dixon, D. 2007. The Complete Illustrated Encyclopedia of Dinosaurs & Prehistoric Creatures. Hermes House: London.

[GPS06] Gasparini, Z., D. Pol & L. A. Spalletti. 2006. An unusual marine crocodyliform from the Jurassic–Cretaceous boundary of Patagonia. Science 311: 70–73.

[LB02] Lapparent de Broin, F. de. 2002. Elosuchus, a new genus of crocodile from the Lower Cretaceous of the north of Africa. Comptes Rendus Palevol 1: 275–285.

[SF03] Salisbury, S. W., E. Frey, D. M. Martill & M. C. Buchy. 2003. A new crocodilian from the Lower Cretaceous Crato Formatioin of north-eastern Brazil. Palaeontographica Abteilung A: Paläozoologie—Stratigraphie 270: 3–47.

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