[D] Labocania anomala [Su] [sG] [T]
Cretaceous Late ?Campanian
Saurischia Theropoda Tetanurae ?Carnosauria
\\\\\\\"La Bocana Roja\\\\\\\" Formation, Estado de Baja California Norte, Mexico
Genus - Typespecies - Skull
The single species Labocania anomale is based on a frontal,quadrate, incomplete maxilla and dentery, a chevron, proximal ischium, metatarsal II, and other fragments. It has several unusual cranial features: the frontals are very thick compared with those of most other theropods, the quadrate condyle lacks the helical groove found in other theropods, the quadrate is hollow and the dentary has an external longitudinal shelf. Labocania anomale shows several tyrannosaurid features: the hollow quadrate, a triangular obturator process of the ischium, and a characteristic semicircular muscle scar on the caudal margin of the ischium.
Fragmentary skull and very fragmentary postcrania discovered in 1970. Holotype: (LACM 20877) (~7.5 m; ~1.2 tons) (skull ~660 mm) ventral section of maxilla, distal section of quadrate, frontal, posterodorsal dentary fragment, premaxillary teeth, maxillary teeth, chevron, proximal ischium (~750 mm), shaft of pubis, nearly complete metatarsal II (<507 mm), phalanx III-2 (~115 mm)