Phylogeny and Adaptive Radiation of the Neograptina (Graptoloida) During the Hirnantian Mass Extinction and Silurian Recovery
Melchin, M. J.1; Mitchell, C. E.2; Naczk-Cameron, A.1; Fan, J. X. (樊隽轩)3; Loxton, J.4
2011-11-01
发表期刊PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY
ISSN0044-0604
卷号58页码:281-309
摘要

Cladistic analysis of some Hirnantian (latest Ordovician) and Rhuddanian-Aeronian (early Silurian) biserial graptolites and basal monograptids has been undertaken in order to test hypotheses of the relationships among the Neograptina ('normalograptids' and their descendents) and to provide a phylogenetic framework for understanding the early Silurian adaptive radiation of graptoloids. It is clear that Silurian graptolite faunas are dominated by two major clades, here named the superfamilies Retiolitoidea and Monograptoidea. Several other lineages whose basal relationships are unresolved, including Normalograptus and Metaclimacograptus, persisted through much of the Llandovery. The Retiolitoidea includes some taxa previously assigned to the Normalograptidae, as well as petalolithids and retiolitids. The Monograptoidea includes akidograptids, dimorphograptids, the uniserial monograptids, as well as stem taxa previously regarded as normalograptids. Both of these major clades had their origins in Late Ordovician time and began their diversification within the Hirnantian-early Rhuddanian, in step with the two main phases of the Hirnantian Mass Extinction. The Neograptina also exhibit an additional interval of accelerated turnover in the Rhuddanian during which the characteristic Silurian fauna largely replaced the Hirnantian Neograptina. One new family, Neodiplograptidae, and four new genera are described: Avitograptus, Rickardsograptus, Korenograptus and Paramplexograptus.

DOI10.1144/pygs.58.4.301
语种英语
关键词[WOS]Canadian-arctic-islands ; Cape-phillips Formation ; Southern Urals ; Graptolites ; Ordovician ; Llandovery ; Evolution ; Classification ; Morphology ; Boundary
资助项目Natural Sciences and Engineering Research Council of Canada ; US National Science Foundation[EAR 0418790] ; Chinese Academy of Science[KZCX2-EW-111]
WOS研究方向Geology
WOS类目Geology
WOS记录号WOS:000299726100009
项目资助者Natural Sciences and Engineering Research Council of Canada ; US National Science Foundation ; Chinese Academy of Science
出版者GEOLOGICAL SOC PUBL HOUSE
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/4166
专题中国科学院南京地质古生物研究所
其他
通讯作者Melchin, M. J.
作者单位1.St Francis Xavier Univ, Dept Earth Sci, Antigonish, NS B2G 2W5, Canada
2.SUNY Buffalo, Dept Geol, Buffalo, NY 14260 USA
3.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
4.Dalhousie Univ, Dept Earth Sci, Halifax, NS B3H 4J1, Canada
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GB/T 7714
Melchin, M. J.,Mitchell, C. E.,Naczk-Cameron, A.,et al. Phylogeny and Adaptive Radiation of the Neograptina (Graptoloida) During the Hirnantian Mass Extinction and Silurian Recovery[J]. PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY,2011,58:281-309.
APA Melchin, M. J.,Mitchell, C. E.,Naczk-Cameron, A.,Fan, J. X. ,&Loxton, J..(2011).Phylogeny and Adaptive Radiation of the Neograptina (Graptoloida) During the Hirnantian Mass Extinction and Silurian Recovery.PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY,58,281-309.
MLA Melchin, M. J.,et al."Phylogeny and Adaptive Radiation of the Neograptina (Graptoloida) During the Hirnantian Mass Extinction and Silurian Recovery".PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY 58(2011):281-309.
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