Traits taxon details
original description
Fagerstrom, J. A. (1961). The fauna of the Middle Devonian Formosa Reef limestone of southwestern Ontario. <em>Journal of Paleontology.</em> 35: 1-48. [details]
basis of record
Schemm-Gregory, M. (2008). New interpretations of the phylogeny and taxonomy of delthyridoid spiriferids (Brachiopoda, Lower and Middle Devonian). <em>Bulletin of Geosciences.</em> 83(4): 401-448., available online at https://doi.org/10.3140/bull.geosci.2008.04.401 [details]
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