. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Immature Rhizodontids from North America • Davis et al. 173. Figure 1. Location of Red Hill site, Clinton County, Pennsylvania, USA. Shaded areas represent Devonian age sediments. Abbreviations; 80, Interstate 80; 120, Pennsylvania State Route 120. tebrates from the fossiliferous zone are two early tetrapod taxa, at least three taxa of osteolepiform sarcopteiygians, an early actinopterygian, groenlandaspidid and phyllolepid placoderms, gyracanthid acan- thodians, and chondrichthyans. This ver- tebrate fauna is associa
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Immature Rhizodontids from North America • Davis et al. 173. Figure 1. Location of Red Hill site, Clinton County, Pennsylvania, USA. Shaded areas represent Devonian age sediments. Abbreviations; 80, Interstate 80; 120, Pennsylvania State Route 120. tebrates from the fossiliferous zone are two early tetrapod taxa, at least three taxa of osteolepiform sarcopteiygians, an early actinopterygian, groenlandaspidid and phyllolepid placoderms, gyracanthid acan- thodians, and chondrichthyans. This ver- tebrate fauna is associated with progyni- nosperm and lycopsid plants as well as pa- lynomorphs. In addition, trigonotarbid ar- thropods are preserved both as body fossils and traces. SYSTEMATIC PALEONTOLOGY Sarcopterygii Romer, 1955 Rhizodontida Andrews and Westoll, 1970 cf. Sauripterus Hall, 1843 Diagnosis. Rhizodontid affinities are supported by the following features: cleithruin overlaps dorsal lamina of clavi- cle medially and ventral lamina of clavicle laterally (reversed from the condition seen. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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