Antarctica

The broad shallow-water, Late Cretaceous to Early Tertiary region along the southern circum-Pacific had been a single faunal province called the Weddellian Province (Zinsmeister, 1979). The Weddellian Province included the southern parts of South America, Australia and New Zealand. The latter two were located much more in the south than today. Within this region the earliest known Struthiolariidae in form of the genera Conchothyra and Perissodonta evolved in the Upper Cretaceous. Perissodonta is still living in the waters around Antarctica. The genera Antarctodarwinella and Struthiolarella were found there in the Early Tertiary.

There are several fossil and two recent species of Stromboidea known from Antarctica.

Aporrhaidae from Antarctica:

• Antarctohoges diversicostata (Wilckens, 1910)
• Austroaporrhais larseni Zinsmeister and Griffin, 1995
• Austroaporrhais stilwelli Zinsmeister and Griffin, 1995
• Struthiochenopus antarcticus Zinsmeister & Griffin, 1995
• Struthiochenopus hurleyi Stilwell, Zinsmeister & Oleinik, 2004
• Struthiochenopus nordenskjoldi (Wilckens, 1910)
• Struthioptera camachoi Zinsmeister, 1977
• Tessarolax antarctica (Cox, 1953)
• Tulochilus erebus (Stilwell, 2000)

Struthiolariidae from Antarctica:

• Antarctodarwinella austerocallosa Stilwell, Zinsmeister & Oleinik, 2004
• Antarctodarwinella ellioti
• Antarctodarwinella nordenskjoldi
• Perissodonta georgiana
• Perissodonta mirabilis
• Struthiolarella mcmurdoensis Stilwell, 2000
• Struthiolarella variabilis Wilckens, 1911

Perissodonta mirabilis var. georgiana in Strebel, 1908, pl. 3, fig. 33 a, b, c

Perissodonta mirabilis (Smith, 1875); Kerguelen Islands, Territory of the French Southern and Antarctic Lands, southern Indian Ocean; from 400 m; 39 mm; 1985; Coll. Koenraad De Turck

Localities

• Alexander Island
  • Wikipedia
• Kerguelen Islands
  • Wikipedia
• Seymour Island
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• Snow Hill Island
  • Wikipedia

References:

• Cantera, J. & Arnaud, P.M. 1985. Las gastéropodes prosobranches des Illes Kerguelen et Crozet (de l'Océan Indien) comparison écologique et particularités biologiques; - CNFRA (Comité National Francais des Recherches Antarctiques), 56: 1-169.
• Engl, W. 2012. Shells of Antarctica, Conchbooks, Hackenheim, 1-402
• Powell, A.W.B. 1954. Antarctic and Subantarctic Mollusca: Pelecypoda and Gastropoda; - Discovery Reports 26: 47-196, Fulltext
• Powell, A.W.B. 1957. Mollusca of the Kerguelen and Macquarie Islands; - B.A.N.Z. Antarctic Reseach Expedition 1929-1931 Reports B 6: 107-149.
• Powell, A.W.B. 1960. Antarctic and Subantarctic Mollusca; - Records of the Auckland Institute and Museum 5: 117-193.
• E.A. Smith, 1875. Descriptions of some new Shells from Kerguelen's Island; Annals and magazine of natural history : including zoology, botany and geology, ser. 4, vol. 16, 67-72
• Strebel, H. 1908. Die Gastropoden in Nordenskjöld, O. Wissenschaftliche Ergebnisse der schwedischen Südpolar-Expedition 1901-1903, VI(1), 1-111, pls. 1-6.
• Troncoso, N., van Goethem, J.L. & Troncoso, J.S. 2001. Contribution to the marine molluscan fauna of Kerguelen Islands, South Indian Ocean; - Iberus 19(1), 83-114, Fulltext
• Zinsmeister, 1979, Biogeographic sinificance of Late Mesozoic and Early Tertiary Molluscan faunas of Seymour Island (Antarctica Peninsula) to the final breakup of Gondwanaland, p. 344-347. In Gray & Boucot (eds.), Historical Biogeography, Plate Tectonics and Changing Environments, 37th Biological Colloquium, Oregon State University Pres, Corvalis, Oregon
• Zinsmeister & Camcho, 1980, Late Eocene Struthiolariidae ..., J. Pal. 54(1), 1-14