A1 Refereed original research article in a scientific journal
An Eocene fossil plutoniumid centipede: a new species of Theatops from Baltic Amber (Chilopoda: Scolopendromorpha)
Authors: Edgecombe Gregory D, Strange Susan E, Popovici George, West Taylor, Vahtera Varpu
Publisher: TAYLOR & FRANCIS LTD
Publication year: 2023
Journal: Journal of Systematic Palaeontology
Journal name in source: JOURNAL OF SYSTEMATIC PALAEONTOLOGY
Journal acronym: J SYST PALAEONTOL
Article number: 2228796
Volume: 21
Issue: 1
Number of pages: 17
ISSN: 1477-2019
DOI: https://doi.org/10.1080/14772019.2023.2228796
Web address : https://doi.org/10.1080/14772019.2023.2228796
Abstract
Four specimens of the same species of scolopendromorph centipede from Eocene Baltic amber provide the first fossil occurrence of the family Plutoniumidae, a clade represented by seven extant species. The fossil material, documented by light microscopy and computed microtomography, is assigned to the genus Theatops Newport, 1844, which currently has a disjunct distribution in temperate North America, the Mediterranean region, and central China. The Eocene species is diagnostically distinct from extant congeners and is formally described as Theatops groehni sp. nov. Phylogenetic analysis of combined morphological and molecular data for three loci finds T. groehni to be nested within crown-group Plutoniumidae. The discovery of T. groehni constrains the minimal divergence date for crown-group Plutoniumidae and is consistent with hypotheses regarding the extent and nature of tropical to warm temperate European forests during the Eocene. The fossil reinforces the hypothesis that the distribution of Plutoniumidae, once more geographically widespread, has been pruned by extinction.
Four specimens of the same species of scolopendromorph centipede from Eocene Baltic amber provide the first fossil occurrence of the family Plutoniumidae, a clade represented by seven extant species. The fossil material, documented by light microscopy and computed microtomography, is assigned to the genus Theatops Newport, 1844, which currently has a disjunct distribution in temperate North America, the Mediterranean region, and central China. The Eocene species is diagnostically distinct from extant congeners and is formally described as Theatops groehni sp. nov. Phylogenetic analysis of combined morphological and molecular data for three loci finds T. groehni to be nested within crown-group Plutoniumidae. The discovery of T. groehni constrains the minimal divergence date for crown-group Plutoniumidae and is consistent with hypotheses regarding the extent and nature of tropical to warm temperate European forests during the Eocene. The fossil reinforces the hypothesis that the distribution of Plutoniumidae, once more geographically widespread, has been pruned by extinction.
UTU Research Portal