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  1. A New Chengjiang Worm Sheds Light on the Radiation and …

  2. 1,2 , Jean Vannier 3, Jie Sun 1,4, Chiyang Yu 1 and Jian Han 1,

  3. Geometric morphometrics of macro- and meiofaunal priapulid

  4. (PDF) A New Chengjiang Worm Sheds Light on the Radiation

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    Priapulids are marine, benthic ecdysozoan worms that feed using a distinctive toothed pharynx. While only a handful of lineages have survived to the present day, the Cambrian priapulid stem group left behind a rich record of articulated body fossils and characteristic trace fossils in the form of burrows.
    Priapulid-like animals of Cambrian age are often divided into two groups, both of which are likely paraphyletic: the palaeoscolecids, with unclear relationships to extant priapulids, and the archaeopriapulids, which share a number of features with the priapulid crown group (Wills et al. 2012 ).
    Persistent scientific and public interest in the early evolution of animals has made some of the Cambrian stem group priapulids more familiar to a larger audience than most extant priapulid taxa, and the iconic genera Ottoia and Selkirkia from the Burgess Shale and other konservat-Lagerstätten are prominent examples.
    Extant priapulids are represented by seven genera (Ahyong et al. 2023) distributed in five families (Fig. 1 a) with uncertain interrelationships, two of which comprise macrofaunal taxa and the remaining three of which contain meiofaunal, poorly known clades. All families apart from the Priapulidae are monogeneric.
  6. Musculature of an Early Cambrian cycloneuralian animal

  7. World Register of Introduced Marine Species (WRiMS)

  8. Penis worms uncover the evolution of the digestive system

  9. Kinorhyncha - The World Kinorhyncha Database - Kinorhyncha

  10. The disparity of priapulid, archaeopriapulid and palaeoscolecid …

  11. Expanding on Our Knowledge of Ecdysozoan Genomes: A …

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