A new trematopid from the lower Permian of Oklahoma and new insights into the genus Acheloma

• Adrian F. Osterling Arias ,

  Contributed equally to this work with: Adrian F. Osterling Arias, Ethan D. Mooney

  Roles Formal analysis, Investigation, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: adrian.osterlingarias@mail.utoronto.ca

  Affiliation Department of Biology, University of Toronto at Mississauga, Mississauga, Ontario, Canada

  https://orcid.org/0009-0000-3732-2706

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• Ethan D. Mooney ,

  Contributed equally to this work with: Adrian F. Osterling Arias, Ethan D. Mooney

  Roles Formal analysis, Visualization, Writing – original draft, Writing – review & editing

  Affiliations Department of Biology, University of Toronto at Mississauga, Mississauga, Ontario, Canada, International Center of Future Science, Dinosaur Evolution Research Center, Jilin University, Changchun, Jilin, Peoples Republic of China

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• Joseph J. Bevitt,

  Roles Data curation, Methodology

  Affiliation Australian Nuclear and Science Technology Organization (ANSTO), Australian Centre for Neutron Scattering, Lucas Heights, Sydney, New South Wales, Australia

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• Robert R. Reisz

  Roles Conceptualization, Data curation, Project administration, Writing – review & editing

  Affiliations Department of Biology, University of Toronto at Mississauga, Mississauga, Ontario, Canada, International Center of Future Science, Dinosaur Evolution Research Center, Jilin University, Changchun, Jilin, Peoples Republic of China

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