IRMNG taxon details
original description
Zakharov, Y. D.; Popov, A. M.; Biakov, A. S. (2008). Late Permian to Middle Triassic palaeogeographic differentiation of key ammonoid groups: evidence from the former USSR. <em>Polar Research.</em> 27(3): 441-468., available online at https://doi.org/10.1111/j.1751-8369.2008.00079.x [details]
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