Data from: Taxonomy of the bivalve Ptychomya in the Lower Cretaceous of the Neuquén basin (west-central Argentina)

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关键词：

Closed outlines;Ptychomya windhauseni;Ptychomya esbelta;taxonomy;Lower Cretaceous;Lower Valanginian - Lowest Barremian;Open outlines;Ptychomya koeneni;Ptychomya;Ptychomya coihuicoensis;Agrio Formation

DOI：

doi:10.5061/dryad.p9j1n

摘要：

was previously unknown (Ptychomya esbelta sp. nov.) whereas another was regarded as a subspecies of P. koeneni, namely Ptychomya windhauseni Weaver. We wer

Data from: Morphological evolution of the bivalve Ptychomya through the Lower Cretaceous of Argentina

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关键词：

Ptychomya windhauseni;Ptychomya esbelta;late Valanginian - earliest Barremian;Early Cretaceous;Ptychomya koeneni;Patterns of evolution;Ptychomya;Ptychomya coihuicoensis;fossil;Geometric morphometrics

DOI：

doi:10.5061/dryad.gn5j6

摘要：

as the majority of traits show stasis, with the exceptions of shell size in P. coihuicoensis and shell outline in P. windhauseni, which seem to evolve directionally