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Species / Orthaulax Inornatus


Original Description of Orthaulax inornatus by Gabb, 1873 as cited by Cooke, 1922:

  • "Shell broadly rounded-fusiform. Young shell with the spire a little shorter than the aperture, suture impressed, whorls numerous, nuclear whorls three, the subsequent ones showing faint traces of occasional thickenings disposed like varices of Triton; surface smooth; anterior end of body whorl marked by a few faint revolving lines, no posterior canal. Adult shell more distinctly fusiform, the spire covered by a longitudinally striated incrustation covering the sutures and extending to the extreme apex. Aperture elongated, acute behind and prolonged into a very narrow posterior canal running straught to the apex; in advance it is gradually narrowed, the anterior notch broad and shallow; inner lip thinly incrusted; outer lip thin in all my specimens, and apparently thin, straight, and entire in the perfect adult."

Gabb does not give any type locality of this species, so Vokes & Vokes, 1968 have choosen:

Locus typicus: Dominican Republic

Stratum typicum: Baitoa Formation, lower Miocene

Orthaulax inornatus Gabb, 1873, pl. 9, fig. 3, 4

Specimens from private collections

Orthaulax inornatus Gabb, 1873; Baitoa formation, early Miocene; Rio Yaque del Norte, Dominican Republic; 1/2014; Coll. Gijs Kronenberg no. 6434

Orthaulax inornatus Gabb, 1873; Miocene; Chipola River, Calhoun County, Florida, USA; 55 mm; Coll. Rupert Hochleitner


  • Gabb, W.M. 1872(1873). Description of some new genera of Mollusca; Proceedings of the Academy of Natural Sciences of Philadelphia 24; 270-274, pls. 9-11, Fulltext

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