Redescription of Drepanopterus abonensis (Chelicerata: Eurypterida: Stylonurina) from the late Devonian of Portishead, UK
作者： JAMES C. LAMSDELL , SIMON J. BRADDY , O. E. TETLIE
DOI: 10.1111/J.1475-4983.2009.00902.X
关键词: Paleozoic 、 Telson 、 Stylonurina 、 Drepanopterus 、 Eurypterid 、 Carboniferous 、 Late Devonian extinction 、 Chelicerata 、 Biology 、 Paleontology
摘要: Abstract: Stylonurid eurypterids (Arthropoda: Chelicerata) include some of the largest known arthropods – bizarre sweep-feeding hibbertopterids from Carboniferous to end-Permian. New material Drepanopterus abonensis, a stylonurid Late Devonian (Famennian) Portishead, south-west England, offers key insights into this genus and its affinities. A redescription utilising new enables D. abonensis be assigned as basal member Superfamily Hibbertopteroidea, large-sweep-feeding forms, possessing cleft metastoma blades (modified blunt spines) on their anterior prosomal appendages. also shares characters such clavate telson median ridge carapace with proposed hibbertopteroid sister group Kokomopteroidea. Hibbertopteroid are most long-ranging stylonurids, surviving decline extinction other eurypterid families in Devonian, survival probably because mode life, which was not direct competition eurypterine relatives predators.
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