Species: bradyi (WELLES 1947)
Etymology:
= Taphrognathus bradyi WELLES 1947
Holotype: UCMP 36199
Locality: Geronimo (Holbrook) quarry, quarry, UC V-3922, on Highway 66, 6 miles west of Holbrook, immediately west of Geronimo Trading post, Apache County, Arizona.
Horizon: Holbrook Member, Moenkopi Formation.
Biostratigraphy:
Age: Anisian Stage, Lower Mid Triassic Epoch, Early-Middle Triassic.
Material: Right mandibular ramus lacking only the articular.
Refered material:
UCMP 36200: Anterior extremity of right dentary.
UCMP 36201: Partial right dentary.
UCMP 36202-3: Partial left dentaries.
UCMP 36205: Partial left prearticular.
UCMP 36210: Right angular.
Note: May not be Hadrokkosaurus.UCMP 36833: Approximately anterior one-third of right lower jaw ramus missing tip of symphysal area.
UCMP 36834: Approximately anterior three-quarters of right dentary.
UCMP 36835: Partial right dentary.
UCMP 36839: ?Right surangular.
UCMP 75434: Anterior extremity of left dentary.
Note: May not be Hadrokkosaurus.UCMP 152390-1: Fragmentary right and left dentaries.
Note: UCMP 152391 may not be Hadrokkosaurus.