Burnetiamorpha: Bullacephalus, Burnetia, Lemurosaurus, Proburnetia etc| Therapsida | ||
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Abbreviated Dendrogram
Synapsida
│
└─Therapsida
└─Raranimus
├─Biarmosuchia
│ ├─Biarmosuchidae
│ └─Ictidorhinidae
│ └─Burnetiamorpha
│ └─Burnetiamorpha
│ ├─Lemurosaurus
│ └─Burnetiidae
└─┬─Eotitanosuchia
└─Eutherapsida
├─Dinocephalia
│ ├─Anteosauria
│ └─Tapinocephalia
└─┬─Anomodontia
│ ├─Venyukovioidea
│ └─Dicynodontia
└─Theriodontia
├─Gorgonopsia
└─┬─Therocephalia
└─Cynodontia |
Contents
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Burnetiamorpha: Bullacephalus, Burnetia, Lemurosaurus, Proburnetia etc
Range: Middle to Late Permian of South Africa
Phylogeny: Biarmosuchia: Ictidorhinidae ::: * : Lemurosaurus + Burnetiidae
Characters: Distinguished by three sets of bony bosses (hornlets): supraorbital (above eyes), on ventral surface of squamosal lateral to level of quadrate, and on lower margin of zygomatic arch at level of postorbital bar (cheek); pit on lateral surface of lacrimal; median frontal ridge, which varies in shape (Sidor & Welman 2003 p.632). These bony decorations can be seen in the drawing of the skull (right)
Illustration: (right) Proburnetia viatkinenses in lateral (top) and dorsal (bottom) views, showing bony bosses and ridges - from Rubidge and Sidor 2002, via Kemp 2005 p.32
References: Sidor & Welman 2003, Jacobs et. al. 2005. MAK091111.
Burnetiidae: Bullacephalus, Burnetia, Proburnetia
Range: Middle to Late Permian of South Africa and Russia (Niuksenitia sukhonense)
Phylogeny: Burnetiamorpha: Lemurosaurus + *
Links: Burnetiidae - Wikipedia (stubby)
References: Sidor & Welman 2003 pp.638-9. MAK091111.
Lemurosaurus: Lemurosaurus pricei Broom 1949
Range: Late Permian (Wuchiapingian) of South Africa
Phylogeny: Burnetiamorpha: Burnetiidae + *
Characters: A primitive, unspecialised form. Small boss at dorsal apex of lateral temporal fenestra; low, ridge-like frontal crest; very coarse serrations on posterior margin of postcanine teeth. Lacks typical Burnetiamorph features of pachyostosed skull roof, nasal boss; and backwardly-pointing squamosal horns. (Sidor & Welman 2003 p.634).
Illustration: Lemurosaurus pricei in lateral view, from Sidor & Welman 2003, via Kemp 2005 p.32
References: Sidor & Welman 2003. MAK091111.
checked MAK091111