Species: aprix GAFFENY, HUTCHINSON, JENKINS & MEEKER, 1987
Etymology:
Holotype: MNA V 1558 (MCZ 8913)
Locality: 35'45"35"'N, 111'04"51"'W, Gold Spring, Adeii Eechii Cliffs, Coconino County, Arizona.
Horizon: Kayenta Formation.
Biostratigraphy:
Age: Pliensbachian Stage, Middle-Upper Middle Lias Epoch, Early Jurassic.
Material: Fragmentary skull and fragmentary shell.
Referred material:
MNA V1559:
MNA V1570:
MNA V2664: Anterior skull roof, snout, and basisphenoid-basiocciptal.
MCZ 8914: Skull roof and right lower jaw ramus.
MCZ 8915: Both lower jaw rami without articular areas.
MCZ 8916: Complete basicranium and isolated skull fragments, including right maxilla, right quadrate, left frontal and fragments of the left dentary and left articular area of the lower jaw.
MCZ 8917: Fragmentary skull and fragmentary shell.
STERLI & JOYCE, 2007
MCZ 8983: Anterior skull roof, basisphenoid-basioccipital, anterior portion of both dentaries, and both articular areas of lower jaw.
MCZ 8999: Isolated fragments of the skull roof, basisphenoid-basioccipital, left quadrate, left maxilla, palatine and jugal.
TMM 43647-1: Almost complete skull roof, only lackign left parietal, both premaxillae, both maxilla,both prootics, fragments of both quadrates, basisphenoid, basioccipital, and anterior portion of left dentary.
TMM 43651-1: Isolated skull fragments, basisphenoid-basioccipital, and fragments of the right pterygoid, left prefrontal, frontal, postorbital and parietal.
TMM 43653-1: Isolated fragments of ventral region of basicranium, maxillae, left quadrate, left frontal, both lower jaw articular areas, and fragments of both dentaries.
TMM 43669-2: Anterior fragments of both dentaries and left articular area of the lower jaw.
TMM 43670-1: Partial skull (unprepared), left damaged, most of palate missing.
TMM 43670-2: Complete skull except the posterior parts of the skull roof.
TMM 43687-27: Lower jaw fragments.
UCMP 130408: Parts of the basisphenoid-basioccipital, left quadrates, and almost complete skull roof lacking only the posterior region of both parietals.