globalchange  > 气候变化与战略
DOI: 10.1080/14772019.2019.1655496
论文题名:
Two new species of fossil Paratydeidae (Acari: Trombidiformes) from the late Eocene amber highlight ultraslow morphological evolution in a soil-inhabiting arthropod lineage
作者: Klimov P.B.; Khaustov A.A.; Vorontsov D.D.; Perkovsky E.E.; Pepato A.R.; Sidorchuk E.A.
刊名: Journal of Systematic Palaeontology
ISSN: 14772019
出版年: 2020
卷: 18, 期:7
语种: 英语
英文关键词: morphology ; Scolotydaeus ; soil mites ; Tanytydeus ; tip dating ; ultraslow phenotypic evolution
Scopus关键词: arthropod ; dating method ; divergence ; Eocene ; evolution ; extinction ; fossil record ; mite ; morphology ; new species ; phenotype ; soil fauna ; type specimen ; Acari ; Arthropoda ; Trombidiformes
英文摘要: We describe two species of soil mite of the family Paratydeidae from the late Eocene Rovno amber: Scolotydaeus vlaskini sp. nov. and Tanytydeus pogrebnyaki sp. nov. This is the first formal description of fossils from the family Paratydeidae. These exceptionally well-preserved fossils have very similar morphologies compared to extant species, suggesting that Paratydeidae is a lineage that has experienced extremely slow rates of phenotypic evolution. To infer rates of morphological evolution in this group, we used a combination of tip dating (from the fossils) and internal node dating (based on molecular outgroup time-calibrated analysis) in a Bayesian phylogenetic framework. This analysis inferred Paratydeidae as an ancient lineage, originating 242 Ma (stem group) and diversifying 150 Ma (crown group), having ultraslow average rates of morphological evolution, i.e. 4.53e-04 changes per site per million years, which is equivalent to one change in any of the characters per 46.0 million years, per each branch of the tree. Based on our divergence time estimates, we suggest that the present global distribution of the group could be explained by their early evolution on the Pangaean supercontinent. Analysis of character state distributions in the fossil specimens suggests later extinction of ancestral taxa in the Palaearctic. http://zoobank.org/urn:lsid:zoobank.org:pub:265A36D2-B6AE-4150-B5B6-59054D33CEA0. © 2019, © The Trustees of the Natural History Museum, London 2019. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158428
Appears in Collections:气候变化与战略

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作者单位: University of Michigan, Research Museums Center, 3600 Varsity Drive, Ann Arbor, MI 48108, United States; Tyumen State University, 6 Volodarskogo Street, Tyumen, 625003, Russian Federation; Institute of Developmental Biology, Russian Academy of Sciences, Vavilova ulitsa 26, Moscow, 119334, Russian Federation; Sсhmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, B. Khmelnitskogo 15, Kiev, 01-601, Ukraine; Borissiak Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya ulitsa 123, Moscow, 117997, Russian Federation; Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Avenida Presidente Antônio Carlos, 6627, Belo Horizonte, 31270901, Brazil

Recommended Citation:
Klimov P.B.,Khaustov A.A.,Vorontsov D.D.,et al. Two new species of fossil Paratydeidae (Acari: Trombidiformes) from the late Eocene amber highlight ultraslow morphological evolution in a soil-inhabiting arthropod lineage[J]. Journal of Systematic Palaeontology,2020-01-01,18(7)
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