Species / Onustus Extensus
Stromboidea
Original Description of Trochus extensus by J. de C. Sowerby, 1821, p. 140:
Localities: "the Cliff at the Isle of Sheppey ... in the Highgate Tunnel" Locus typicus: Isle of Sheppey, Kent County, South East Region, England Stratum typicum: Ypresian, lower Eocene Trochus extensus Sowerby, 1821, pl. 278, fig. 2
Trochus extensus Sowerby, 1821, pl. 278, fig. 3
References
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