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Hidden morphological diversity among early tetrapods
Phylogenetic analysis of early tetrapod evolution has resulted in a consensus across diverse data sets in which the tetrapod stem group is a relatively homogenous collection of medium- to large-sizedExpand
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Stem caecilian from the Triassic of Colorado sheds light on the origins of Lissamphibia
Significance Research into modern amphibian origins is increasingly focusing on the limbless caecilians, a poorly studied group whose pre-Cenozoic fossils are limited to two species. We describe tinyExpand
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PLEMMYRADYTES SHINTONI, GEN. ET SP. NOV., AN EARLY PERMIAN AMPHIBAMID (TEMNOSPONDYLI: DISSOROPHOIDEA) FROM THE ESKRIDGE FORMATION, NEBRASKA
Abstract The fossil vertebrate localities near Humboldt, Richardson County, Nebraska, have produced a diverse assemblage of amphibians from near the Permo-Carboniferous (C-P) boundary, including atExpand
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Cranial Morphology of Recumbirostrans (Lepospondyli) from the Permian of Kansas and Nebraska, and Early Morphological Evolution Inferred by Micro-Computed Tomography
ABSTRACT ‘Microsaurs’ (Lepospondyli) were a group of tetrapods whose fossil record spanned the Mississippian—Early Permian, and have sometimes been implicated in the origins of lissamphibiansExpand
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The Cranial Morphology of a New Genus of Lungfish (Osteichthyes: Dipnoi) from the Upper Jurassic Morrison Formation of North America
ABSTRACT Much of Mesozoic diversity within the lungfishes (Osteichthyes: Dipnoi) has traditionally been relegated to the genus Ceratodus, primarily on the basis of the highly stereotypical dentalExpand
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Micro-CT Study of Rhynchonkos stovalli (Lepospondyli, Recumbirostra), with Description of Two New Genera
The Early Permian recumbirostran lepospondyl Rhynchonkos stovalli has been identified as a possible close relative of caecilians due to general similarities in skull shape as well as similarExpand
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Cranial Morphology of the Carboniferous-Permian Tetrapod Brachydectes newberryi (Lepospondyli, Lysorophia): New Data from µCT
Lysorophians are a group of early tetrapods with extremely elongate trunks, reduced limbs, and highly reduced skulls. Since the first discovery of this group, general similarities in outwardExpand
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Cranial Morphology of the Brachystelechid ‘Microsaur’ Quasicaecilia texana Carroll Provides New Insights into the Diversity and Evolution of Braincase Morphology in Recumbirostran ‘Microsaurs’
Recumbirostran ‘microsaurs,’ a group of early tetrapods from the Late Carboniferous and Early Permian, are the earliest known example of adaptation to head-first burrowing in the tetrapod fossilExpand
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An Exceptionally Preserved Transitional Lungfish from the Lower Permian of Nebraska, USA, and the Origin of Modern Lungfishes
Complete, exceptionally-preserved skulls of the Permian lungfish Persephonichthys chthonica gen. et sp. nov. are described. Persephonichthys chthonica is unique among post-Devonian lungfishes inExpand
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