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Species / Orthaulax Hernandoensis

Orthaulax Hernandoensis

Stromboidea


Original description of Orthaulax pugnax hernandoensis by Mansfield, 1937:

  • "Specimens of the genus Orthaulax from localities in Florida and Alabama appear to be somewhat different from O. pugnax (Heilprin) and are referred to a new subspecies hernandoensis, although this inference cannot be fully confirmed. The differences appear to be that the specimens have a higher spire than O. pugnax (Heilprin) and that there is no positive indication that the outer lip enveloped the spire. The outer lip may have been very thin and consquently absorbed in the change of mineralization or destroyed in some other way. The exterior molds of O. pugnax are more ovate than the exterior molds of the new subspecies. The specimens usually have three irregular swellings or knobs which give the shell a triangular shape. This subspecies appears to be closely related to Orthaulax gabbi Dall, a Chipola formation species, as to O. pugnax (Heilprin)."

Locus typicus: Station 12758, Camp Concrete Rock quarry, about 5 miles northeast of Brooksville, Hernando County, Florida, USA

Stratum typicum: Suwannee limestone, Oligocene

Orthaulax hernandoensis Mansfield, 1937; Suwannee Limestone Formation, lower Oligocene; Zephyr Hills, Pasco County, Florida, USA; 36,7 mm; Coll. UW2422

Orthaulax hernandoensis Mansfield, 1937; Suwannee Limestone Formation, lower Oligocene; Zephyr Hills, Pasco County, Florida, USA; Coll. Virgilio Liverani

  1. 56 mm
  2. 51,5 mm

Orthaulax hernandoensis looks like an Oostrombus and not like an Orthaulax.

Etymology: named after Hernando County, Florida USA

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