Back to results
University of Illinois at Urbana-Champaign
Morphology and Systematics of Cordaites of Pennsylvanian Coal Swamps of Euramerica
Abstract
dc:descriptionCordaites are extinct coniferophytic shrubs and trees of the Late Paleozoic. They were most prominent in tropical coal swamps existing from the Westphalian A-B boundary of Western Europe to the middle Desmoinesian (Westphalian D) of midcontinental United States. Structurally preserved coal-ball cordaites from Pennsylvanian Euramerican coals were analyzed for whole plant understanding, morphological variation, and indications of ecological tolerances. Organ assemblages for individual species were established from coals where coal balls contain single cordaitean seed species. Cordaitean organ assemblages were stratigraphically compiled, compared, and cross-correlated.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Botany
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2014
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Costanza, Suzanne Helene
Subjects
dc:subject × 1Identifiers
dc:identifier.*- Identifier
- (UMI)AAI8409760
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/71274