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- Title
Vein reticulation in seed ferns of the Dobrudzha coalfield Bulgaria.
- Authors
Tenchov, Yanaki Georgiev
- Abstract
Alethopteris, Lonchopteris, Paripteris, Linopteris and Reticulopteris are abundant pteridosperm fronds in the Pennsylvanian-age Dobrudzha Coalfield. The transition from fan-shape to reticulate veining in Lonchopteris, Linopteris and Reticulopteris and in Laveineopteris to Reticulopteris is documented. The most probable cause for this is the decrease in humidity; in addition to temperature controls on the geographic distribution. The form and positioning of anastomoses are discussed.
- Subjects
DOBRUJA (Romania &; Bulgaria); BULGARIA; ROMANIA; PALEOECOLOGY; PTERIDOSPERMAE; CARBONIFEROUS Period; COOLING; COALFIELDS; HUMIDITY
- Publication
Geologia Croatica, 2012, Vol 65, Issue 3, p351
- ISSN
1330-030X
- Publication type
Article
- DOI
10.4154/GC.2012.24