A phylogenetic subdivision of Australian skinks

Greer, Allen E.

doi:10.3853/j.0067-1975.32.1979.459

Cited by 109 publications

(127 citation statements)

References 16 publications

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“…The lygosomines that have this most complete palate accomplish this in one of two ways: (1) the palatines have medial processes that extend between the pterygoids, or (2) the pterygoids themselves can extend medially (Greer 1979). The former occurs in some species of the Eugongylus group (Greer 1979), whereas the latter occurs in some species of the Sphenomorphus group (Greer 1979) and Egernia cygnitos. No other species within the Egernia group (Egernia, Liopholis, Bellatorias, Lissolepis, Tiliqua, Cyclodomorphus) has a secondary palate that incorporates the pterygoids (Greer 1989;Hollenshead, unpubl.…”

Section: Secondary Palatementioning

confidence: 99%

“…In a partial palate, the palatine bones extend only part of the way across the roof of the mouth, leaving a broad gap between the two passages. The subfamily Lygosominae (Sphenomorphus group, Egernia group and Eugongylus group), to which all Australian skinks belong, exhibit the most complete palate of all skinks (Greer 1979). In most lygosomines, the palatine bones meet or nearly meet at the midline to form a complete separation of the passages (Greer 1979; Figure 9A, C, D).…”

Section: Secondary Palatementioning

confidence: 99%

“…The subfamily Lygosominae (Sphenomorphus group, Egernia group and Eugongylus group), to which all Australian skinks belong, exhibit the most complete palate of all skinks (Greer 1979). In most lygosomines, the palatine bones meet or nearly meet at the midline to form a complete separation of the passages (Greer 1979; Figure 9A, C, D). The lygosomines that have this most complete palate accomplish this in one of two ways: (1) the palatines have medial processes that extend between the pterygoids, or (2) the pterygoids themselves can extend medially (Greer 1979).…”

Section: Secondary Palatementioning

confidence: 99%

“…In most lygosomines, the palatine bones meet or nearly meet at the midline to form a complete separation of the passages (Greer 1979; Figure 9A, C, D). The lygosomines that have this most complete palate accomplish this in one of two ways: (1) the palatines have medial processes that extend between the pterygoids, or (2) the pterygoids themselves can extend medially (Greer 1979). The former occurs in some species of the Eugongylus group (Greer 1979), whereas the latter occurs in some species of the Sphenomorphus group (Greer 1979) and Egernia cygnitos.…”

Section: Secondary Palatementioning

confidence: 99%

“…data). The functional signifi cance of the secondary palate in skinks is not yet understood (Greer 1979).…”

Section: Secondary Palatementioning

confidence: 99%

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Geometric morphometric analysis of cranial variation in the Egernia depressa (Reptilia: Squamata: Scincidae) species complex

Hollenshead

2011

Rec West Aust Mus

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-Few studies have attempted to simultaneously examine geographic, ontogenetic and sexual variation of lizard crania. This study does so with a focus on the Egernia depressa species complex (Pygmy Spiny-tailed Skinks), which occur throughout much of arid Western Australia and inhabits fallen trees in the southern part of its range and rock crevices in disjunct boulder outcrops in the northern part of its range in the Pilbara. Geometric (i.e. landmark-based) morphometrics were used to examine variation in cranial shape in E. depressa, E. cygnitos and E. epsisolus. Cranial differences were evident among the different species; however, the differences depended on which aspect of the cranium was being analysed. A comparison also was made between E. depressa which inhabits tree hollows v. E. cygnitos and E. epsisolus which use rock crevices. The lateral aspect of the cranium of the rock-inhabiting species differs from the log-inhabiting species in having dorsal-ventral compression of the postorbital region. Egernia cygnitos which lives western portion of the Pilbara differs from other species in having a wider cranium with a correspondingly broader palatal region. Sexual dimorphism was not evident, but ontogenetic changes in cranial form were present.

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Section: Secondary Palatementioning

confidence: 99%

Section: Secondary Palatementioning

confidence: 99%