دورية أكاديمية
New species of Franchia and Protozigzagiceras (Ammonoidea, Middle Jurassic): The phyletic origin of Zigzagiceratinae
| العنوان: | New species of Franchia and Protozigzagiceras (Ammonoidea, Middle Jurassic): The phyletic origin of Zigzagiceratinae |
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| المؤلفون: | Fernández López, Sixto Rafael, Pavia, Giulio |
| بيانات النشر: | Blackwell Publishing Ltd |
| سنة النشر: | 2013 |
| المجموعة: | Universidad Complutense de Madrid (UCM): E-Prints Complutense |
| مصطلحات موضوعية: | 564.53, Ammonites, Perisphinctidae, Western Tethys, Ethiopian Province, Bathonian Global Stratotype Section and Point, Paleontología, 2416 Paleontología |
| الوصف: | Three genera and seven species belonging to the subfamily Zigzagiceratinae (family Perisphinctidae) are described from the Lower Bathonian of France and Saudi Arabia. Intraspecific dimorphism is recognized. A revision of the genus Franchia proposed by Sturani (1967), based on the syntypes and new specimens from south-east France, is presented. Franchia arkelli Sturani, Franchia subalpina sp. nov., Protozigzagiceras torrensi (Sturani), Protozigzagiceras tethycum sp. nov., Protozigzagiceras flexum sp. nov. and Protozigzagiceras densum sp. nov. are described from the Digne– Castellane region of south-east France. Megazigzagiceras subarabicum, gen. et sp. nov. is described from the Dharma region of Saudi Arabia. The successive Early Bathonian species of Franchia and Protozigzagiceras herein identified in West Tethyan areas, as members of the Mediterranean–Caucasian Subrealm, formed lasting separate peramorphoclines characterized by increasing hydrodynamic coiling of the shell. In contrast, rapid proterogenesis originated and diversified the earliest Bathonian zigzagiceratin lineages, giving paedomorphic members, commonly neotenic and more scarcely progenetic. Procerites–Siemiradzkia seems to be the oldest zigzagiceratin member in the French Subalpine, Iberian and Lusitanian basins, branched off by paedomorphosis from leptosphinctins at the Bajocian–Bathonian transition. The Mediterranean–Caucasian genera Franchia, Zigzagiceras, Zigzagites and Wagnericeras branched from successive species of Protozigzagiceras, in turn, a direct derivative of Procerites. The oldest lineages of the clade Zigzagiceratinae evolved by iterative, rapid, paedomorphic changes and additional, lasting, peramorphic modifications during the Early Bathonian. ; Depto. de Geodinámica, Estratigrafía y Paleontología ; Fac. de Ciencias Geológicas ; TRUE ; pub |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0031-0239 |
| العلاقة: | http://www.palass.org/modules.php?name=palaeo&sec=publications&page=69Test; https://hdl.handle.net/20.500.14352/33457Test |
| DOI: | 10.1111/pala.12084 |
| الإتاحة: | https://doi.org/20.500.14352/33457Test https://doi.org/10.1111/pala.12084Test https://hdl.handle.net/20.500.14352/33457Test http://www.palass.org/modules.php?name=palaeo&sec=publications&page=69Test |
| حقوق: | open access |
| رقم الانضمام: | edsbas.32F99CA7 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 00310239 |
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| DOI: | 10.1111/pala.12084 |