. Bonner zoologische Monographien. Zoology. HOWl R /OOUH,ISC'Hk MONOGRAPHIEN Nr. 57/201!. FIG. 4. Maxillae of select agamids in dorsal (left column), lateral (middle column), and medial (right column) views, (a, d, g) Agama mossambica, UF 55339; (b, e, h) Leiolepis belliana, UF 62048; and (c, f, i) Uromastyx princeps, CM 145044. Abbreviations: , facial process (posterior remnant); , jugal groove; , pala- tine process; ree, maxillary reentrant on the jugal. Bell et al. 2009). It is unclear whether this feature is autapomorphic of Agamidae* and lost in Leiolepis, or whether the s
. Bonner zoologische Monographien. Zoology. HOWl R /OOUH,ISC'Hk MONOGRAPHIEN Nr. 57/201!. FIG. 4. Maxillae of select agamids in dorsal (left column), lateral (middle column), and medial (right column) views, (a, d, g) Agama mossambica, UF 55339; (b, e, h) Leiolepis belliana, UF 62048; and (c, f, i) Uromastyx princeps, CM 145044. Abbreviations: , facial process (posterior remnant); , jugal groove; , pala- tine process; ree, maxillary reentrant on the jugal. Bell et al. 2009). It is unclear whether this feature is autapomorphic of Agamidae* and lost in Leiolepis, or whether the state in Leiolepis is plesiomorphic. Among living agamids, however, Tinosaurus sp. MPH is uniquely similar to Leiolepis in this respect. The posterior remnant of the facial process ex- tends posteriorly well beyond the palatine process in most agamids (although posterior to the reentrant it is completely absent). In Leiolepis, however, the pos- terior extent of the facial process is reduced, extend- ing no farther than the posterior end of the palatine process, fully exposing the jugal in lateral view. The length of the facial process in Tinosaurus sp. MPH is intermediate in length, which incidentally shows that there is no simple relationship between facial process length and the presence of a reentrant. In at least some specimens of Leiolepis, there is a longitudinal slit on the dorsal surface of the (narrow) palatal shelf (Fig. 4b). This slit is located midway between the palatine process and the posterior end of the bone. Re-articulation of UF 62048 reveals that the slit receives neither the edge of the jugal nor the ectopterygoid; its presence is presumably related to a yet undetermined feature of the connective tissue. This slit was not found in other agamids available as disarticulated specimens and is absent in Tinosaurus sp. MPH. This absence is considered plesiomorphic. Ectopterygoid. A single, partial right ectopterygoid, PTRM 19134, is associated with this species on
Size: 1831px × 1364px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology
