A new millipede (Diplopoda, Helminthomorpha) from the Middle Triassic Luoping biota of Yunnan, Southwest China

Jinyuan Huang, Joseph T. Hannibal, Rodney M. Feldmann, Qiyue Zhang, Shixue Hu, Carrie E. Schweitzer, Michael J. Benton, Changyong Zhou, Wen Wen, Tao Xie

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Abstract

A new helminthomorph millipede, Sinosoma luopingense new genus new species, from the Triassic Luoping biota of China, has 39 body segments, metazonites with lateral swellings that bear a pair of posterolateral pits (?insertion pits for spine bases), and sternites that are unfused to the pleurotergites. This millipede shares a number of characters with nematophoran diplopods, but lacks the prominent dorsal suture characteristic of that order. Other "millipede" material from the biota is more problematic. Millipedes are a rare part of the Luoping biota, which is composed mainly of marine and near-shore organisms. Occurrences of fossil millipedes are exceedingly rare in Triassic rocks worldwide, comprising specimens from Europe, Asia, and Africa, and consisting of juliform millipedes and millipedes that are either nematophorans or forms very similar to nematophorans.
Original languageEnglish
Pages (from-to)478-487
Number of pages10
JournalJournal of Paleontology
Volume92
Issue number3
Early online date26 Mar 2018
DOIs
Publication statusPublished - 1 May 2018

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