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Gondwanaria nigriniae Petrushevskaya and Kozlova, 1979

Description - Add description

Gondwanaria spA
Description. Cephalis small, spherical to subspherical, with scattered small circular to subcircular pores, bearing one conical apical horn of nearly the length of the thorax. The cephalis is usually separated from the thorax by a neck. Thorax is conical with circular to subcircular pores and bears two wings. The shell has no subdivision between thorax and abdomen but the thorax is slightly constricted.
Occurrences in Holes 689B and 690B. Middle Miocene.
Remarks. The species is very similar to the species called G. dogieli forma "C" shown in Dzinoridze et al. (1978) but is different from G. dogieli described in Petrushevskaya and Kozlova (1972) and Petrushevskaya (1975). The species also is similar to Lipmanella xiphephorum sensu Petrushevskaya and Kozlova (1972) as illustrated by Bjorklund (1976).
Abelmann 1990











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