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The Daptocephalus Assemblage Zone (Lopingian), South Africa: A proposed biostratigraphy based on a new compilation of stratigraphic ranges
New Material Of Menadon besairiei (Cynodontia: Traversodontidae) From the Triassic Of Madagascar
A phylogenetic analysis incorporating information from the new specimens supports the placement of Menadon as the sister taxon to the clade Exaeretodon + Scalenodontoides, and shows that this taxon had a well-developed internarial bar and four upper incisors.
A comprehensive taxonomic revision of Dicynodon (Therapsida, Anomodontia) and its implications for dicynodont phylogeny, biogeography, and biostratigraphy
A new phylogenetic analysis of Anomodontia reveals that “Dicynodon” is polyphyletic, necessitating taxonomic revision at the generic level, and new generic names are established for several species formerly included in DICynodon.
Systematics of the Anteosauria (Therapsida: Dinocephalia)
- C. Kammerer
- Biology, Environmental Science
- 1 June 2011
A critical taxonomic review of all known anteosaur taxa and a reevaluation of anteosurian interrelationships recovers a monophyletic Anteosauridae containing two major clades, Syodontinae (containing Australosyodon, Notosydon and Syodon) and AnteOSaurinee ( containing Anteosaurus, Sinophoneus and Titanophoneus).
The African cynodont Aleodon (Cynodontia, Probainognathia) in the Triassic of southern Brazil and its biostratigraphic significance
The first occurrence of the enigmatic African probainognathian genus Aleodon in the Middle-early Late Triassic of several localities from the state of Rio Grande do Sul in southern Brazil is reported and a new species of Aleodon is proposed based on the specimens from Brazil.
A new taxon of cynodont from the Tropidostoma Assemblage Zone (upper Permian) of South Africa, and the early evolution of Cynodontia
- C. Kammerer
- Biology, Geography
- 1 August 2016
Despite their small size, the holotypes of Abdalodon and Charassognathus probably represent adults and indicate that early evolution of cynodonts may have occurred at small body size, explaining the poor Permian fossil record of the group.
Ontogeny in the Malagasy Traversodontid Dadadon isaloi and a Reconsideration of its Phylogenetic Relationships
Denticulated incisors evolved multiple times in traversodontid evolution (in massetognathines and Arctotraversodon), and thus this group represents another possibility (besides various archosauromorphs) to be considered when attempting to identify isolated Triassic teeth with denticulated carinae lacking cingula.
Notes on Some Preoccupied Names in Arthropoda
- C. Kammerer
- 1 April 2006
New replacement names for the preoccupied mite genera Absentia Huang and Venilia Kuznetsov, 1979 are proposed and one new annelid replacement name, Omodeodrilus nom.
Comparative and developmental functional morphology of the jaws of living and fossil gars (Actinopterygii: Lepisosteidae)
- C. Kammerer, L. Grande, M. Westneat
- Biology, Environmental ScienceJournal of morphology
- 1 September 2006
Principal components analysis of functionally important morphometrics shows that several gar species occupy different regions of functional morphospace, although gars occupy a range of biomechanical states across the continuum of force vs. velocity transmission.
Early Evolutionary History of the Synapsida
Procrustes analysis of the two best-preserved specimens of these species allowed recognition of further shape differences: M. oligocynus has a taller but narrower cranium, taller snout, temporal opening more expanded laterally, pterygoid process located more anteriorly, and smaller suborbital vacuity.