Abstract
Morphological shape is relatively stable in Silurian–Devonian atrypide members within the P3 EEU. Results from several geometric morphometric techniques (including Procrustes analysis and Thin-plate spline) confirm a high degree of morphological variability within samples from each time unit with little change in mean shape between atrypide individuals from Atrypinae and Variatrypinae subfamilies. Geographic differentiation in morphological shape within atrypide samples appears to be greater than temporal variation.
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References
De A, Bose R (2009) Can molecular biology and bioinformatics be used to probe an evolutionary pathway? Proc Nat Acad Sci USA 106:52
Boucot AJ, Blodgett RB, Rohr DM (2012) Brachiopoda (Atrypidae), from upper Silurian strata of the Alexander terrane, northeast Chichagof Island, Alaska. Bull Geosci 87:261–267
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Bose, R. (2013). Conclusion. In: Palaeobiology of Middle Paleozoic Marine Brachiopods. SpringerBriefs in Earth Sciences. Springer, Cham. https://doi.org/10.1007/978-3-319-00194-4_5
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DOI: https://doi.org/10.1007/978-3-319-00194-4_5
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