Stagonolepis

Desojo, Julia B., Ezcurra, Martin D. & Schultz, Cesar L., 2011, An unusual new archosauriform from the Middle-Late Triassic of southern Brazil and the monophyly of Doswelliidae, Zoological Journal of the Linnean Society 161 (4), pp. 839-871 : 870

STAGONOLEPIS

Character 15: in Stagonolepis the state (1) has been introduced instead of (0) because the main body and ventral process of the squamosal overhang laterally the proximal end of the quadrate and the ascending ramus of the quadratojugal, respectively (Walker, 1961).

Character 19: in Stagonolepis the state (1) has been introduced instead of (?) because in a new species of Stagonolepis from Poland (Sulej, 2010) the contact between the maxilla and the ectopterygoid is evident. Character 25: in Stagonolepis the state (0) has been introduced instead of (?) because in a new species of Stagonolepis from Poland (Sulej, 2010) the external abducens foramen (VI) is on the ventral surface of the prootic.

Character 32: in Stagonolepis the medial margins of the exoccipitals do not contact each other; thus the basioccipital contributes to the floor of the foramen magnum (BMNH R4784). Accordingly, the state (0) has been introduced instead of (?) in this taxon.

Character 36: in Stagonolepis the maxillary tooth row extends further posteriorly than the dentary tooth row, and they are not subequal (Walker, 1961). In this regard, the state (1) has been introduced instead of (0) in this taxon.

Character 49: in Stagonolepis the distal end of the cervical neural spines does not exhibit a terminal transversal expansion (spine table; Walker, 1961). As a result, the state (0) has been coded instead of (?) in Stagonolepis .

Character 50: in Stagonolepis the distal end of the dorsal neural spines present a transversal expansion resulting in a well-developed spine table (Walker, 1961; BMNH R4784). Accordingly, we have introduced the state (1) instead of (?) for this character in Stagonolepis .

Character 68: in Stagonolepis the astragalocalcaneal canal is present (Walker, 1961). As a result, the character state (1) has been scored instead of (?).