Historical Burden In Systematics And The Interrelationships Of ‘Parareptiles’

@article{Lee1995HistoricalBI,
  title={Historical Burden In Systematics And The Interrelationships Of ‘Parareptiles’},
  author={Michael S. Y. Lee},
  journal={Biological Reviews},
  year={1995},
  volume={70}
}
The interrelationships within the clade comprised of turtles, pareiasaurs, and procolophonid‐like taxa are investigated via a cladistic analysis incorporating 56 characters. A single most parsimonious tree was found (80 steps, c. i. = 0·8) in which the successive outgroups to turtles are: pareiasaurs, Sclerosaurus, lanthanosuchids, procolophonoids (=Owenetta, Barasaurus and procolophonids), and nyctiphruretians (= nycteroleterids). Thus, as suggested recently by other workers (Reisz, in… 

Pareiasaur phylogeny and the origin of turtles

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Turtles as diapsid reptiles

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A clade consisting of the nycteroleters and pareiasaurs, here termed Pareiasauromorpha, is supported by both methods and is found to be paraphyletic with Bayesian inference.

Problems of the Ancestry of Turtles

TLDR
The unquestioned unity of the Chelonia provides a necessary basis for establishing their interrelationships and determining the evolutionary history within the group, and recent studies of the genetic and molecular aspects of the development of the carapace and plastron imply unique patterns of evolutionary change that cannot be recognized in any of the other amniote lineages.

THE PROCOLOPHONOID REPTILE SAUROPAREION ANOPLUS FROM THE LOWERMOST TRIASSIC OF SOUTH AFRICA

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A new phylogenetics analysis of Procolophonoidea, incorporating new phylogenetic characters from other studies, confirms the position of S. anoplus as the sister taxon of a clade comprising all procolophonoids exclusive of Coletta seca and Owenettidae and Procolophonidae are now sister taxa.

Alpha Taxonomy of the Russian Permian Procolophonoid Reptiles

TLDR
Re-examination indicates that Suchonosaurus is a member of the procolophonoid subfamily Procolophonidae based on the shape of the maxillary bone and the external naris, the laterally visible maxillary depression, and the number and type of maxillary teeth, and re-examination of the holotype of MicroPHon exiguus confirms that it is identical to the seymouriamorph specimens recently included in the genus Microphon.

A NEW PROCOLOPHONOID (REPTILIA, PARAREPTILIA) FROM THE UPPER PERMIAN OF URUGUAY

TLDR
A phylogenetic analysis suggests a basal position for Pintosaurus within Procolophonoidea, either as the sister taxon of a clade that includes Coletta and procolophonids or as the siblings of Coletta itself.
...

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