Platyplectrum Günther, 1863, Ann. Mag. Nat. Hist., Ser. 3, 11: 27. Type species: Platyplectrum marmoratum Günther, 1863, by monotypy.
Platyplectron — Peters, 1863, Monatsber. Preuss. Akad. Wiss. Berlin, 1863: 235. Incorrect subsequent spelling, treated as a subgenus of Limnodynastes.
Opisthodon Steindachner, 1867, Reise Österreichischen Fregatte Novara, Zool., Amph.: 9. Type species: Opisthodon frauenfeldi Steindachner, 1867, by monotypy. Synonymy by implication of Cogger, Cameron, and Cogger, 1983, Zool. Cat. Aust., Amph. Rept., 1: 19, and Tyler and Doughty, 2009, Field Guide Frogs W. Aust., 4th ed.: 107. .
None noted.
Central, northern, and western Australia.
To render Limnodynastes monophyletic, Opisthodon (the sister taxon of Lechriodus) was removed from the synonymy of Limnodynastes by Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297, where it had been placed by Günther, 1867, Ann. Mag. Nat. Hist., Ser. 3, 20: 54; Boulenger, 1882, Cat. Batr. Sal. Coll. Brit. Mus., Ed. 2: 258; Nieden, 1923, Das Tierreich, 46: 528. Previously recognized; without discussion, by Wells and Wellington, 1985, Aust. J. Herpetol., Suppl. Ser., 1: 3. Cogger, Cameron, and Cogger, 1983, Zool. Cat. Aust., Amph. Rept., 1: 19, showed that Platyplectrum is a senior synonym of Opisthodon. See also Tyler and Doughty, 2009, Field Guide Frogs W. Aust., 4th ed.: 107). Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, in their study of Genbank sequences, suggested that the taxon is paraphyletic with respect to Lechriodus.
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