Published December 18, 2014
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Fig. 6 in Morphology and histology of dorsal spines of the xenacanthid shark Orthacanthus platypternus from the Lower Permian of Texas, USA: Palaeobiological and palaeoenvironmental implications
Description
Fig. 6. Cross-sections of dorsal spines (non-denticulated region) of Orthacanthus platypternus (Cope, 1884), Lower Permian, Craddock Bone Bed, Texas, USA. Comparison between the smallest, specimen HMNS-T1 (A), and the largest Orthacanthus dorsal spine sampled, specimen HMNS-J1 (B). Posterior sides of the spines are pointing to the top of the figure.
Notes
Published as part of Beck, Kimberly G., Soler-Gijón, Rodrigo, Carlucci, Jesse R. & Willis, Ray E., 2016, Morphology and histology of dorsal spines of the xenacanthid shark Orthacanthus platypternus from the Lower Permian of Texas, USA: Palaeobiological and palaeoenvironmental implications, pp. 97-117 in Acta Palaeontologica Polonica 61 (1) on page 105, DOI: 10.4202/app.00126.2014, http://zenodo.org/record/10980746
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