Traits taxon details
original description
Nettelroth, H. (1889). Kentucky Fossil Shells. A monograph of the fossil shells of the silurian and devonian rocks of Kentucky. <em>Kentucky Geological Survey.</em> pp. 245, 34 pls, 4 unnumbered pages with errata., available online at https://www.biodiversitylibrary.org/page/16845483 [details]
basis of record
Sproat, C. D.; McLeod, J. S. (2023). Sympatric speciation driving evolution of Late Ordovician brachiopod <i>Zygospira</i> in eastern North America. <em>Journal of Paleontology.</em> 97(2): 292-317., available online at https://doi.org/10.1017/jpa.2022.102 [details]
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