Taxonomic history of the genus †Thecachampsoides

After Brochu, 2004

    †Thecachampsoides Norell & Storrs, 1986
        Gavialis Marsh, 1870
        Sphenosaurus Morton, 1844, non Sphenosaurus von Meyer, 1864

        †Thecachampsoides minor (Marsh, 1870)
            Gavialis minor Marsh, 1870
            ?Sphenosaurus clavirostris Morton, 1844
            Thecachampsoides minor (Marsh) Norell & Storrs, 1986
            Thecachampsoides minor (Marsh) Brochu, 2004
            Eosuchus minor (Marsh) Delfino, Piras & Smith, 2005

Note:

Brochu (2004) suggested that Thecachampsoides minor (Marsh) and Sphenosaurus clavirostris Morton are actually a cospesific and the correct binomen should Thecachampsoides clavirostris (Morton). However he didn't formalize this chance yet, but continued to use binomen Thecachampsoides minor (Marsh).

Recently Delfino et al. (2005) have synonymized Eosuchus Dollo, 1907 and Thecachampsoides Norell & Storrs, 1986. However, if previous opinion of Brochu (2004) holds true, will Sphenosaurus Morton, 1844 have a priority over both Eosuchus Dollo, 1907 and Thecachampsoides Norell & Storrs, 1986

Reference(s):

Brochu, C. A., 2004: A new Late Cretaceous gavialoid crocodylian from eastern North America and the phylogenetic relationships of thoracosaurs.
–Journal of Vertebrate Paleontology: Vol. 24, #3, pp. 610-633
Delfino, M., Piras, P. & Smith, T., 2005: Anatomy and phylogeny of the gavialoid crocodylian Eosuchus lerichei from the Paleocene of Europe.
–Acta Palaeontologica Polonica: Vol. 50, #3, pp. 565-580

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