S. Sumida

Publications58
h-index22
Citations1,344
Highly Influential Citations122
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A stem batrachian from the Early Permian of Texas and the origin of frogs and salamanders
TLDR
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.
Georgenthalia clavinasica, A New Genus and Species of Dissorophoid Temnospondyl from the Early Permian of Germany, and the Relationships of the Family Amphibamidae
TLDR
Several features support a highly terrestrial habitus of G. clavinasica, which is consistent with the interpretation of the fossiliferous beds of the Bromacker quarry as representing an upland terrestrial environment in which limnic conditions were characterized by ephemeral lakes and ponds.
REDESCRIPTION OF SEYMOURIA SANJUANENSIS (SEYMOURIAMORPHA) FROM THE LOWER PERMIAN OF GERMANY BASED ON COMPLETE, MATURE SPECIMENS WITH A DISCUSSION OF PALEOECOLOGY OF THE BROMACKER LOCALITY ASSEMBLAGE
Abstract Two nearly complete, articulated, mature specimens of the amphibian Seymouria are described from the Lower Permian Tambach Formation, lowermost unit of the Upper Rotliegend, of the Bromacker…
Lower Permian Terrestrial Paleoenvironments and Vertebrate Paleoecology of the Tambach Basin (Thuringia, Central Germany): The Upland Holy Grail
Abstract The Bromacker section of the Lower Permian, Tambach Formation, in central Germany, yields an important fossil-vertebrate assemblage that was deposited in an upland setting near the center of…
Early Permian bipedal reptile.
TLDR
A 290-million-year-old reptilian skeleton from the Lower Permian of Germany provides evidence of abilities for cursorial bipedal locomotion, employing a parasagittal digitigrade posture, and confirms the widespread distribution of Bolosauridae across Laurasia during this early stage of amniote evolution.
Reinterpretation of vertebral structure in the Early Permian pelycosaur Varanosaurus acutirostris (Amniota, Synapsida)
  • S. Sumida
  • Biology, Environmental Science
  • 19 December 1989
TLDR
The axial neural spine is large, and its anterior projection between the paired halves of the atlantal neural arch may have aided in preventing them from occluding the foramen magnum during rotation of the cranium relative to the vertebral column.
A NEW DIADECTID (DIADECTOMORPHA), OROBATES PABSTI, FROM THE EARLY PERMIAN OF CENTRAL GERMANY
Abstract A new genus and species of the herbivorous Diadectidae, Orobates pabsti, is described on the basis of several specimens, including two complete, articulated skeletons, a skull with partial…
Encyclopedia of Dinosaurs Philip J. Currie Kevin Padian
The appendicular skeleton of the Early Permian genus Labidosaurus (Reptilia, Captorhinomorpha, Captorhinidae) and the hind limb musculature of captorhinid reptiles
  • S. Sumida
  • Environmental Science
  • 28 September 1989
TLDR
The pectoral girdle is heavily constructed, with a glenoid fossa that limited the humerus to an excursion arc of approximately 50 degrees, and indications of a system of cruciate ligaments are present in well preserved femora and ...
CHAPTER 11 – LOCOMOTOR FEATURES OF TAXA SPANNING THE ORIGIN OF AMNIOTES
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