New palynological data from the Malanzán Formation (Carboniferous), La Rioja Province, Argentina

PEREZ LOINAZE, V.S.

AMEGHINIANA

Asociación Paleontológica Argentina

Lugar: Ciudad de Buenos Aires; Año: 2009 vol. 46 p. 495 - 512

0002-7014

<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-AU; mso-fareast-language:EN-AU;} p.CM22, li.CM22, div.CM22 {mso-style-name:CM22; mso-style-next:Normal; margin-top:0cm; margin-right:0cm; margin-bottom:20.65pt; margin-left:0cm; mso-pagination:none; mso-layout-grid-align:none; text-autospace:none; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-AU; mso-fareast-language:EN-AU;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> Palynological analysis of the Malanzán Formation in the Paganzo Basin, northwestern Argentina, has yielded six well-preserved palynological assemblages. Fifty-nine species were determined: 37 spores, 19 pollen grains, and three algae. Thirty-two of these species have not so far been recorded from the Malanzán Formation, and all pollen species are illustrated for the first time. These assemblages are referred to Sub-Biozone A of the Raistrickia densa-Convolutispora muriornata Biozone, Serpukhovian in age. Moreover, the abundance of monosaccate pollen grain might constrain the Malanzán Formation to the late Serpukhovian.