|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Testudines - Testudinidae
It was considered a nomen vanum by Reynoso and Montellano-Ballesteros (2004); it was recombined as Gopherus hexagonatus by Vlachos (2018) and De La Garza et al. (2018).
|Year||Name and author|
|1893||Testudo hexagonata Cope|
|1902||Testudo hexagonata Hay|
|1908||Testudo campester Hay|
|1937||Bysmachelys canyonensis Johnston p. 447|
|1966||Gopherus huecoensis Strain|
|1982||Gopherus canyonensis Bramble p. 854|
|1982||Gopherus hexagonata Bramble p. 854|
|2004||Gopherus canyonensis Reynoso and Montellano-Ballesteros p. 824|
|2018||Gopherus hexagonatus De La Garza et al.|
|2018||Gopherus hexagonatus Vlachos|
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|E. D. Cope 1893||The lip of the plastron is not produced and bifurcate, as in T. agassizii
(from S. E. California), but the posterior lobe is quite similar to that of
the latter species. The posterior lobe of the T. laticaudata is intermediate
in proportions between those of T. hexagonata and T. polyphemus.
Both of the extinct species may belong to the genus Xerobates,
Ag., but this can not be determined until the crania are discovered.
The specimens of this species are smaller than the single one which
represents the T. laticaudata. Though allied to the latter, the forms of
the lobes of the plastron display too many differences to permit me to
regard them as identical.
|E. Vlachos 2018||Gopherus hexagonatus can be diagnosed as a member of Gopherus based on the characters mentioned above. Gopherus hexagonatus differs from other Gopherus to the exclusion of Gopherus donlaloi in its larger size and from Gopherus donlaloi in the presence of hexagonal neurals III–VIII.|