Subprionocyclus neptuni Geinitz 1849

Cephalopoda - Ammonitida - Collignoniceratidae

Alternative combination: Ammonites neptuni

Synonyms: Oregoniceras knighteni Anderson 1902, Oregoniceras oregonense Anderson 1902, Oregoniceras siskiyouense Anderson 1902, Schloenbachia knighteni Anderson 1902, Schloenbachia oregonensis Anderson 1902, Schloenbachia siskiyouensis Anderson 1902

Belongs to Subprionocyclus according to M. Wilmsen and E. Nagm 2014

See also Anderson 1902, Anderson 1958, Futakami 1990 and Wright 1979

Sister taxa: Subprionocyclus branneri, Subprionocyclus hitchinensis, Subprionocyclus normalis, Oregoniceras jillsoni, Oregoniceras condoni, Oregoniceras phoenixense, Oregoniceras multicostum, Oregoniceras argonautarum, Oregoniceras jacksonense

Type specimens:

  • Subprionocyclus neptuni: MMG SaK 10032, a shell. Its type locality is Dresden-Strehlen, Saxony, which is in a Turonian marine limestone in the Strehlen Formation of Germany.
  • Schloenbachia knighteni:
  • Schloenbachia oregonensis:
  • Schloenbachia siskiyouensis:

Average measurements (in mm): shell diameter 75.0


• Cretaceous of Brazil (3 collections), Germany (6), the United Kingdom (1), United States (2: California, Oregon)

Total: 12 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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