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A stem batrachian from the Early Permian of Texas and the origin of frogs and salamanders
The discovery of an amphibamid temnospondyl from the Early Permian of Texas that bridges the gap between other Palaeozoic amphibians and the earliest known salientians and caudatans from the Mesozoic is reported.
A reevaluation of early amniote phylogeny
It is indicated that three major clades of amniotes extend from the present to the Palaeozoic, and these three clades are the Synapsida (including Mammalia), Parareptilia (including Testudines), and Eureptili (including Sauria).
A diapsid reptile from the Pennsylvanian of Kansas / by Robert R. Reisz.
- R. Reisz
The first articulated skeleton of Dendrerpeton acadianum (Temnospondyli, Dendrerpetontidae) from the Lower Pennsylvanian locality of Joggins, Nova Scotia, and a review of its relationships
Although Dendrerpeton bears a general resemblance to the highly terrestrial dissorophoid temnospondyls and even shares with them a large squamosal embayment supported ventrally by the quadratojugal and a quadrate process, phylogenetic analysis does not support a sister-group relationship.
Molecular timescales and the fossil record: a paleontological perspective.
Evidence that the fossil record is inadequate for proposing a reliable external calibration date for the mammal–bird split is presented and the bird–lizard split is proposed as an alternative major evolutionary event, one of several potential external calibrations.
Four well-constrained calibration points from the vertebrate fossil record for molecular clock estimates.
It is plea for closer interactions between paleontologists and molecular biologists in studying the timescale of vertebrate evolution and proposes three qualitative, phylogenetic criteria that can be used within a comparative framework for the selection of well-constrained calibration dates from the vertebrate fossil record.
Review of T. S. Kemp, ‘Mammal-like Reptiles and the Origin of Mammals’
- R. Reisz
- 1 February 1983
CHAPTER 2 – A NEW PERSPECTIVE ON TETRAPOD PHYLOGENY
This chapter provides an in-depth explanation of the origin of amniotes and conclusions indicate that Lissanphibubians are part of Temnospondyli and have other relatives like Microsauria, Colosteidae, Nectridea, and Ichthyostegidae.
THE ORIGIN AND EARLY EVOLUTION OF TURTLES
A critical reexamination of turtle relationships continues to support a sister-group relationship of turtles with a clade of marine reptiles, Sauropterygia, within crown-group Diapsida (Sauria), and an aquatic origin of turtles is suggested.
Owenetta kitchingorum, sp. nov., a small parareptile (Procolophonia: Owenettidae) from the Lower Triassic of South Africa
The anatomy of a new species of Owenetta, O. kitchingorum, from the Early Triassic is described here on the basis of three nearly complete skeletons, and controversies surrounding parareptilian phylogeny are discussed as they relate to Owenetta.