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Mid-Carboniferous conodonts and their evolution: new evidence from Guizhou, South China
Hu, Keyi (胡科毅)1,2; Qi, Yuping (祁玉平)3; Nemyrovska, Tamara I.4
2019-03-19
Source PublicationJOURNAL OF SYSTEMATIC PALAEONTOLOGY
ISSN1477-2019
Volume17Issue:6Pages:451-489
Abstract

We studied details of the conodont assemblages in two deep-water sections spanning the mid-Carboniferous boundary at Guizhou, South China. Forty-six species/subspecies were identified belonging to 13 genera, including Lochriea, Gnathodus, Declinognathodus, Idiognathoides, Idiognathodus, Neognathodus, Neolochriea, Swadelina, 'Streptognathodusii', Cavusgnathus, Adetognathus, Rhachistognathus and Hindeodus. The evolutionary relationships among the species of Gnathodus, Neognathodus, Declinognathodus, Idiognathoides, Idiognathodus and Swadelina are discussed based on their P-1 and P-2 elements, as well as those of the species of Lochriea and Neolochriea. The early Pennsylvanian species of Declinognathodus are specifically studied with a focus on their taxonomy and evolution because of their biostratigraphical significance. These species can be distinguished as being part of the ridged or nodose groups by the parapet features of their P-1 elements. The ridged group comprises D. praenoduliferus, D. bernesgae, D. lateralis, the newly recognized taxa D. tuberculosus sp. nov. and D. intermedius sp. nov., and D. cf. pseudolateralis. The nodose group includes D. inaequalis, D. noduliferus and D. japonicus. The number of rostral-ventral nodes of the Declinognathodus P-1 elements are gradually reduced stratigraphically. Declinognathodus tuberculosus sp. nov. is considered to be the ancestor of the other ridged Declinognathodus species following a reduction in the number of rostral-ventral nodes; D. intermedius sp. nov. is a species that acts as a link within the lineage of the genera Declinognathodus and Swadelina via the development of an accessory lobe; D. cf. pseudolateralis is considered to be a morphotype that gave rise to the oldest Idiognathodus species, I. primulus, via D. lateralis with the shortening of its groove; and D. bernesgae is interpreted as the ancestor of the genus Idiognathoides following a transition wherein it loses its single node. The ancestry of the ridged group was probably derived from the ridged species Gnathodus postbilineatus. The nodose group may either be derived from D. tuberculosus sp. nov., or from G. girtyi simplex. The mid-Carboniferous boundary in the studied sections can be recognized by the first appearance datum of Declinognathodus tuberculosus sp. nov. Neognathodus is probably derived from Gnathodus girtyi simplex, while species of Neolochriea share a common ancestor with Lochriea commutata.

KeywordMid-carboniferous Early Pennsylvanian Conodonts Taxonomy Evolution South China
DOI10.1080/14772019.2018.1440255
Language英语
WOS KeywordGlobal Stratotype Section ; Pennsylvanian Conodonts ; Barcaliente Formation ; Northern Spain ; Arrow-canyon ; Boundary ; Biostratigraphy ; Middle ; Nevada ; Urals
Funding ProjectNational Natural Science Foundation of China[41630101] ; National Natural Science Foundation of China[41290260] ; National Natural Science Foundation of China[41372023] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18030400] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences)[173110] ; Fundamental Research Funds for the Central Universities[020614380043] ; Ministry of Science and Technology of China[2015FY310100]
WOS Research AreaEvolutionary Biology ; Paleontology
WOS SubjectEvolutionary Biology ; Paleontology
WOS IDWOS:000461664500001
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences) ; Fundamental Research Funds for the Central Universities ; Ministry of Science and Technology of China
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/15923
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorHu, Keyi (胡科毅)
Affiliation1.Nanjing Univ, Ctr Res & Educ Biol Evolut & Environm, 163 Xianlin Rd, Nanjing 210023, Jiangsu, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Econ Stratig & Palaeogeog, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
4.Natl Acad Sci Ukraine, Inst Geol Sci, 55-b O Gonchar St, UA-01601 Kiev, Ukraine
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Hu, Keyi ,Qi, Yuping ,Nemyrovska, Tamara I.. Mid-Carboniferous conodonts and their evolution: new evidence from Guizhou, South China[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2019,17(6):451-489.
APA Hu, Keyi ,Qi, Yuping ,&Nemyrovska, Tamara I..(2019).Mid-Carboniferous conodonts and their evolution: new evidence from Guizhou, South China.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,17(6),451-489.
MLA Hu, Keyi ,et al."Mid-Carboniferous conodonts and their evolution: new evidence from Guizhou, South China".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 17.6(2019):451-489.
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