WoRMS source details

Zachos, L.G. 2012. A new genus and species of echinoid (Echinoidea, Spatangoida) from the Oligocene (Rupelian) of Mississippi. Southeastern Geology, 49/1, 43-48.
Available for editors  PDF available [request]
A new genus and species of spatangoid echinoid, Tripatagus pittsi n. gen., n. sp., is described from the Marianna Limestone, Lower Oligocene (Rupelian) of Mississippi. The family is uncertain: plating of the plastron suggests the family Maretiidae; ethmolytic apical system, presence of both peripetalous and subanal fascioles, and depressed petals suggest the family Brissidae or Macropneustidae. It differs from nearly all other genera of these families in the character of 3 gonopores in an ethmolytic apical system, lacking a gonopore in genital plate 2.
2013-05-15 12:51:44Z

Tripatagus Zachos, 2012 † (original description)
Tripatagus pittsi Zachos, 2012 † (original description)
Mississippi for Tripatagus Zachos, 2012 † 
Mississippi for Tripatagus pittsi Zachos, 2012 † 

Test small, cordate. Apical system ethmolytic, 3 gonopores, no gonopore in genital plate 2. Anterior ambulacrum ... [details]


Incorporates the prefix tri- with the root –patagus to indicate the 3 gonopores. [details]


The specific name honors the collectors Leslie and Sue Pitts. [details]

 Fossil range

Oligocene, Rupelian  [details]


Marianna Limestone, Vicksburg Group [details]


Placement within the Maretiidae tentative - needs to be confirmed by additional analysis. [details]

 Type locality

HT: Smith County Lime Plant quarry, west of State Highway 18, 3 kilometers southeast of Sylvarena, 31º 59’ 24” ... [details]

 Type material

HT: MMNS IP-4006; PT: MMNS IP-3929, IP103.1, IP103.2, IP-103.3 MMNS = Mississippi Museum of Natural Science [details]