کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4750082 1642465 2016 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bennettitales in the Rhaetian flora of Wüstenwelsberg, Bavaria, Germany
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Bennettitales in the Rhaetian flora of Wüstenwelsberg, Bavaria, Germany
چکیده انگلیسی


• Bennettitalean plant remains from the Rhaetian of Franconia, Germany, described
• 8 species of Pterophyllum, Anomozamites, Nilssoniopteris, Wielandiella identified
• A new type of bennettitalean microsporangiate organ obtained: Welsbergia nov. gen.
• Welsbergia bursigera comb. nov. exclusively associated with Pterophyllum aequale.
• Dispersal patterns and plant adaptations in the light of palaeogeography discussed

The diverse bennettitalean plant remains from the Rhaetian of Wüstenwelsberg, Franconia, southern Germany, are described by means of macromorphological and epidermal anatomy; the study is part of the ongoing examination of this recently excavated and excellently preserved fossil flora. The taxa identified include four species of Pterophyllum, one species of Anomozamites, two species of Nilssoniopteris and one species of Wielandiella with sterile leaves, bracts and ovulate reproductive organs. In addition, an enigmatic type of bennettitalean microsporangiate organ has been obtained, remains of which from the Rhaetian of Greenland had been assigned to Bennettistemon. However, the material from Wüstenwelsberg is much more complete and is assigned to a new genus, viz. Welsbergia gen. nov., with its type species Welsbergia bursigera (Harris) comb. nov., based on the organ's unique architecture. The microsporangiate organs are always exclusively associated with the sterile foliage Pterophyllum aequale. Comparison of the flora from Wüstenwelsberg with adjacent Rhaetian floras revealed distinct local differences in the bennettitalean constitution, which are discussed in the light of palaeogeography and plant dispersal patterns.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Review of Palaeobotany and Palynology - Volume 232, September 2016, Pages 98–118
نویسندگان
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