Sementes do gênero Samaropsis Goeppert no Permiano inferior da bacia do Paraná, Sul do Brasil

The genus Cordaicarpus Geinitz in the Lower Permian of the Paraná Basin, Rio Grande do Sul, Brazil

“…This paper gives continuity to a previous study that began with the publication of seeds belonging to genus Samaropsis Goeppert (Souza & Iannuzzi, 2007), analyzing herein the seeds classified in genus Cordaicarpus Geintz.…”

“…1, Samaropsis sp. 2; Souza & Iannuzzi, 2007) (Iannuzzi et al, 2006;Vieira et al, 2007). Iannuzzi et al (2003a,b; have proposed that the levels N1 and N4 correspond to deposits of marginal environments, lagoonal to lacustrine systems, whereas levels N7 and N8 represents strata typically found in flood plains and other subenvironments associated with channel deposits of a braided fluvial system.…”

“…The flora consists of impressions of fronds of Botrychiopsis plantiana and leaves of Gangamopteris obovata, Glossopteris communis and Cordaites hislopii, besides the Samaropsis and Cordaicarpus seeds (Iannuzzi et al, 2006). The fossil Level N4, which is stratigraphically situated at the uppermost portion of Itararé Group, is composed of light grey to reddish, horizontally laminated siltstones and siltymudstones, in which have been preserved abundant plant impressions corresponding to stems (Paracalamites-type), rhizomes (Pinnularia-type), leafy shoots related to Phyllotheca australis (= P. indica) (Souza & Iannuzzi, 2007), and the Cordaicarpus-type, the last the subject of this paper.…”

Dispersal Syndromes of fossil Seeds from the Lower Permian of Paraná Basin, Rio Grande do Sul, Brazil

“…The Morro do Papaléo -Lavina outcrop, identified by Souza and Iannuzzi (2009) as Faxinal Section, received little attention regarding its facies description and paleoenvironmental interpretation. However, it is knew from the lithology and floristic assemblage that it corresponds to levels correlated to those described by Iannuzzi et al (2003Iannuzzi et al ( , 2006 to the uppermost Itararé Group, specifically subjacent to level N4 and approximately equivalent to level N2 (Figure 1).…”

“…Botanical affinity: Leaves records of Glossopteris communis and Gangamopteris spp., remains of stems (Paracalamites-type) and leafy shoots related to sphenophytes (Phyllotheca and Stephanophyllites), as well as fragmented fronds of Botrychiopsis plantiana, have been recovered from the same exposure from which comes S. kurtzii (Souza and Iannuzzi 2009). However, in this record there are no specimens of S. kurtzii attached to other structures, which could give information about the parent plant.…”