New taxa • Redescription of
Chuandianella ovata, based on data from new specimens from the Yu'anshan Member of the Chiungchussu Formation (
Cambrian Stage 3; Yunnan, China) preserving unprecedented details of their soft anatomy, is published by Zhai
et al. (2022). • A study on the ventral aspect of head organization of
Jianfengia multisegmentalis, and on its evolutionary significance, is published by Zhang
et al. (2022). • Redescription of
Triopus draboviensis is published by Van Roy, Rak & Fatka (2022), who also provide a revised diagnosis for
Cheloniellida, and exclude
Parioscorpio venator from this clade. • Redescription of the ventral morphology of
Retifacies abnormalis and a study on the implications of this taxon for the knowledge of the relationships and evolution of Cambrian artiopods is published by Zhang
et al. (2022). • A study on the appendicular organization in
Pygmaclypeatus daziensis and on its ecological and evolutionary implications is published by Schmidt
et al. (2022). • Description of the organization of the central nervous system of a specimen of
Mollisonia symmetrica from the Burgess Pass (
Burgess Shale;
British Columbia,
Canada) is published by Ortega-Hernández
et al. (2022). • A study on the evolutionary stability in the history of fossil and living
xiphosurids is published by Bicknell
et al. (2022). • Revision of Australian xiphosurids
Austrolimulus fletcheri,
Dubbolimulus peetae,
Tasmaniolimulus patersoni and
Victalimulus mcqueeni, and a study on the temporal range of these taxa is published by Bicknell
et al. (2022), who reinterpret
T. patersoni as living in the
Triassic rather than
Permian. • New specimen of
Vaderlimulus tricki, providing new information on the anatomy of this xiphosuran and representing the first record of muscles in an
austrolimulid reported to date, is described from the
Olenekian Thaynes Group (
Idaho, United States) by Lerner &
Lucas (2022). • A study on the ontogenetic stages,
allometry and ecology of
Paleolimulus kunguricus is published by Naugolnykh & Bicknell (2022). • A study on the anatomy of the
chelicerae of
Slimonia acuminata, based on data from a new specimen, is published by Lamsdell (2022). • Braddy & Gass (2022) redescribe tracks from the Ordovician
Martinsburg Formation (
New York,
United States) assigned to the ichnotaxon
Palmichnium gallowayi, attribute these tracks to a medium-sized stylonurid
eurypterid, and interpret them as the earliest trace fossil evidence for mass migrations of eurypterids into nearshore environments to molt and mate. • Biomechanical study of the chelicerae of
pterygotid eurypterids is published by Bicknell
et al. (2022), who argue that pterygotid chelicerae were functionally analogous to scorpion
chelae, and that
Erettopterus bilobus and
Pterygotus anglicus had a generalised diet and were
apex predators of their ecosystems, while
Acutiramus bohemicus was adapted to piercing and slicing the cuticle of other eurypterids, and
Jaekelopterus rhenaniae was adapted to capturing large, highly mobile, armoured prey. • New fossil material of
Tuzoia with exceptionally preserved soft tissues is described from the Cambrian
Burgess Shale (
Canada) by Izquierdo-López & Caron (2022), who interpret this arthropod as adapted to predation or scavenging while swimming along the seafloor, and interpret it as an early member of
Hymenocarina. • A study on the functional morphology of
Ercaicunia multinodosa, aiming to determine the posture used by this arthropod to overcome resistance and to obtain most lift while sliding in the water column, is published by Li
et al. (2022). ==General research==