Topic
Asterotheca
About: Asterotheca is a research topic. Over the lifetime, 24 publications have been published within this topic receiving 293 citations.
Papers
TL;DR: Distributional evidence suggests that Acitheca probably originated in eastern North America and Western Europe in middle Pennsylvanian, and towards the end of it its geographical range had extended to Eastern Europe, the Caucasus, and into Permian of China.
48 citations
TL;DR: In this paper, the Triassic plant fossils from the Svalbard archipelago are comprehensively reviewed, and the composition of the flora is strikingly similar to the Carnian flora of Lunz in Lower Austria, sharing an unexpectedly large number of taxa, and it is proposed that most of the fossils derive from the De Geerdalen Formation, which is dated as Carnian.
Abstract: The Triassic plant fossils from the Svalbard archipelago are comprehensively reviewed. The poorly known flora is widespread and has been recovered from all Triassic exposures in the archipelago; 24 species are identified and one new species, viz. Arberophyllum substrictum, is described. The flora consists of sphenophytes, ferns, cycadophytes, and putative ginkgophytes and seed ferns. Ferns and Bennettitales are the dominant elements. The composition of the flora is strikingly similar to the Carnian flora of Lunz in Lower Austria, sharing an unexpectedly large number of taxa, and thus, it is proposed that most of the fossils derive from the De Geerdalen Formation, which is dated as Carnian. Key taxa in the Svalbard flora are Asterotheca, Neocalamites, Pterophyllum, and Arberophyllum. The floristic composition and sedimentology of the host strata suggests that the flora thrived in a coastal lagoonal/deltaic environment. The similarity of the Svalbard and Lunz floras argues that the North Atlantic floral sub...
36 citations
TL;DR: A sequence of Triassic rocks is exposed near the town of Concepcion, Chile as mentioned in this paper, which are interpreted as the deposits of rivers, lakes, playas, and alluvial fans.
33 citations
TL;DR: The genus Astrosphaeriella Sydow has been regarded as a synonym of Microthelia Kerber in recent surveys of bitunicate pyrenomycetes as mentioned in this paper.
29 citations
TL;DR: Although subtle, the four pecopterid species are differentiable from one another by combined FTIR characteristics, supporting taxonomy, and the ratio of CH 2 /CH 3 is hypothesized to be a chemotaxonomic parameter for Pennsylvanian pteridophylls.
29 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2017 | 1 |
| 2013 | 1 |
| 2012 | 1 |
| 2006 | 3 |
| 2005 | 2 |