Early Carboniferous palynoflora from the Ambo Formation, Pongo de Mainique, Peru.

AZCUY, CARLOS; DI PASQUO, MARÍA DE LAS MERCEDES

REVIEW OF PALAEOBOTANY AND PALYNOLOGY

Elsevier B.V.

Lugar: Amsterdam; Año: 2005 vol. 134 p. 153 - 184

0034-6667

Six productive samples from the upper part of the Early Carboniferous Ambo Formation at Pongo de Mainique, Peru, are analised for 55 miospore species recognised of continental origin. One new species, Cristatisporites peruvianus, is described. An emended diagnosis is proposed for Kraeuselisporites together with lists of species that are accepted or rejected for this genus. Five species are transferred to Kraeuselisporites: Kraeuselisporites explanatus (Luber in Luber and Waltz 1941) nov. comb., Kraeuselisporites scorpius (Balme and Hassell 1962) nov. comb, Kraeuselisporites dolianitii (Daemon 1974) nov. comb., Kraeuselisporites reidii (Foster 1979) nov. comb., Kraeuselisporites daemonii (Loboziak et al. 1999) nov. comb.. A detailed analysis of the composition of the palynoflora allows its identification with the late Viséan Cordylosporites magnidictyus Palynozone, recently defined in the Amazon Basin in Brazil. Worldwide comparison of the Peruvian association indicates greater affinity with coeval palynofloras from Gondwana region (South America and North Africa) and North America. The greatest differences exist with European and Argentinean palynofloras, although the latter are still imperfectly known. The degree of similarity is likely to be determined by palaeolatitude.