Helvetostrea sequana, Taxa Only, Exact Match: 2 Treatments

Helvetostrea sequana			Koppka, Jens, 2015, Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland — Ostreoidea, Zootaxa 3927 (1), pp. 1-117 : 13-15	13-15
Helvetostrea Koppka, 2015, n. gen.			Koppka, Jens, 2015, Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland — Ostreoidea, Zootaxa 3927 (1), pp. 1-117 : 36-42	36-42