globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2013.09.015
论文题名:
Ecophenotypic variation of the devonian benthic ostracod species cavellina rhenana krömmelbein, 1954: A paleoenvironmental proxy for the ardenne (france-belgium) and rheno-hercynian realm
作者: Maillet S.; Milhau B.; Vreulx M.; Danelian T.; Monnet C.; Nicollin J.-P.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 392
起始页码: 324
结束页码: 334
语种: 英语
英文关键词: Intraspecific variation ; Ostracoda ; Paleoenvironment ; Paleozoic ; Polymorphism ; Shallow water
英文摘要: The morphological variation of the carapace of the ostracod species Cavellina rhenana Krömmelbein, 1954 is explored here quantitatively. This species existed during the Late Givetian to the earliest Frasnian and it is characteristic of the Rheno-Hercynian area. Five morphological characters and several linear measurements of the carapace were analyzed on 260 complete carapaces coming from three different areas, each of them representing a different paleoenvironment of the Devonian Ardennean platform. The original species description and diagnosis are emended based on this newly observed variability in ornamentation, sulcation, curvature of the ventral margin, marginal flattening and asymmetry of valves. It is established herein that the morphological variation expressed in these five characters is independent of the ontogenetic growth. Morphological variation appears to be correlated with different types of facies, reflecting a distinct depositional environment. A high degree of morphological variation is found in facies of inner platform (semi-restricted) environments, while a low degree of variation is found in facies of outer platform (open-marine) environments. Thus, the degree of morphological variation of C. rhenana is an indicator of the stability of the environment in the neritic realm. While environmentally-cued polymorphism is well documented in Mesozoic to Recent ostracods, our study demonstrates the first Devonian case of ecomorphism and suggests that intraspecific polymorphism of the ostracod carapace can be a useful tool for refining paleoenvironmental reconstructions. © 2013 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69566
Appears in Collections:过去全球变化的重建

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作者单位: Université Catholique de Lille, FLST-ISA, Laboratoire de Paléontologie Stratigraphique, 41 rue du port, 59 016 Lille cedex, France; Université Catholique de Lille, FLST, Laboratoire d'Ecologie et Biodiversité, 56 rue du port, 59 016 Lille cedex, France; Université Lille1, UMR 8217 CNRS Géosystèmes, Bât. SN5, Avenue Paul Langevin, 59 655 Villeneuve-d'Ascq, France

Recommended Citation:
Maillet S.,Milhau B.,Vreulx M.,et al. Ecophenotypic variation of the devonian benthic ostracod species cavellina rhenana krömmelbein, 1954: A paleoenvironmental proxy for the ardenne (france-belgium) and rheno-hercynian realm[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,392
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