S. Modesto

Publications80
h-index31
Citations2,237
Highly Influential Citations214
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Earliest evidence of cynodont burrowing
TLDR
A 251 million year old partial burrow cast containing an articulated skeleton of the mammal–like carnivore Thrinaxodon liorhinus is the oldest evidence for burrowing by a cynodont synapsid, and indicates that burrow–making was broadly distributed in basal synapsids and has a long history in non–mammalian synapid evolution.
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The skull of the herbivorous synapsid Edaphosaurus boanerges from the Lower Permian of Texas
The skull of the Early Triassic archosauromorph reptile Prolacerta broomi and its phylogenetic significance
TLDR
Phylogenetic analysis of a previously published data matrix corroborates the hypotheses of the polyphyly of Prolacertiformes (Protorosauria) and of a close relationship between ProlacERTa and Archosauriformes.
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The Captorhinid Reptile Captorhinikos valensis from the Lower Permian Vale Formation of Texas, and the Evolution of Herbivory in Eureptiles
TLDR
Stratigraphic calibration of the captorhinid phylogeny indicates that moradisaurines evolved by the middle Kungurian (middle Leonardian), and Captorhinikos chozaensis is no longer classifiable as a morad isaurine, and should be assigned to a new genus.
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Reassessment of the Morphology and Paleobiology of the Therocephalian Tetracynodon Darti (Therapsida), And The Phylogenetic Relationships of Baurioidea
TLDR
The brain is strikingly plesiomorphic in many features, but generally shows features that are intermediate between gorgonopsians and cynodonts, thus clarifying this stage of the evolution of the synapsid brain.
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The cranial skeleton of the Early Permian aquatic reptile Mesosaurus tenuidens: implications for relationships and palaeobiology
TLDR
Emendation of problematic characters and reanalysis of amniote phylogeny using a slightly modified data matrix from the literature strengthens the hypothesis that mesosaurs form a clade with millerettids, procolophonoids and pareiasaurs within Reptilia.
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Bird-like characteristics of troodontid theropod eggshell
TLDR
The identification of squamatic ultrastructure in troodontid eggshell, which was previously thought to lack this structure, reveals problems with the previous assignment of this eggshell to the dinosauroid-prismatic morphotype and with the concept of eggshell morphotype in the current eggshell parataxonomy.
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Observations on the structure of the Early Permian reptile Stereosternum tumidum Cope
The Council's Research Committe, University of the Witwatersrand; National Science Foundation
A second varanopseid skull from the Upper Permian of South Africa: implications for Late Permian ‘pelycosaur’ evolution
Late Permian terrestrial faunas of South Africa and Russia are dominated taxonomically and ecologically by therapsid synapsids. On the basis of a single specimen from the Upper Permian of South…
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Vertebrate Paleontology of Nooitgedacht 68: A Lystrosaurus maccaigi-Rich Permo-Triassic Boundary Locality in South Africa
The farm Nooitgedacht 68 in the Bethulie District of the South African Karoo Basin contains strata that record a complete Permo-Triassic boundary sequence providing important new data regarding the…
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