Traits taxon details
original description
Hall, J. (1862). Observations upon a new genus of Brachiopoda. <em>Report of the New York State Museum of Natural History.</em> 15: 154-155. [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 note: Provides revision of species placed in the genus, including updates on synonymy within genus. [details]
additional source
Copper, P. (1977). Zygospira and some related Ordovician and Silurian atrypoid brachiopods. <em>Palaeontology.</em> 20: 295-335. note: Copper (1977) revived the genus Anazyga and moved many species of Zygospira into this genus. [details]
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