A new genus of ptyctodont (Placodermi) from the late Devonian of Baltic area

Kate Trinajstic, John A. Long, Alexander O. Ivanov, Elga Mark-Kurik

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Abstract

The ptyctodont fish first referred to as Chelyophorus pskovensis Obruchev, 1947 from the Early Frasnian (Late Devonian) of Velikaya River, Pskov Region, Russia, is redescribed following the collection of additional materials from the contemporaneous Meeksi Mill outcrop, Estonia; Piskovichi and Snetnaya Gora outcrops, Russia and is here referred to Meeksiella gen. nov. With the exception of an articulated skull roof, the fossils occur as three dimensionally preserved isolated plates, and this has allowed accurate reconstruction of the dermal skeleton. A phylogenetic analysis resolves Meeksiella pskovensis gen. et sp. nov. within a previously recovered cluster of taxa which includes Ctenurella from Europe and Austroptyctodus from Western Australia, demonstrating global distribution of this clade during the Late Devonian.

Original languageEnglish
Article number22.2.23
Pages (from-to)1-19
Number of pages19
JournalPalaeontologia Electronica
Volume22
Issue number2
DOIs
Publication statusPublished - 1 Jan 2019

Bibliographical note

Copyright: May 2019 Society of Vertebrate Paleontology.
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
creativecommons.org/licenses/by/4.0/creativecommons.org/licenses/by-nc-sa/4.0/

Keywords

  • Estonia
  • Frasnian
  • New genus
  • Phylogeny
  • Placoderm
  • Pskov Region
  • Ptyctodont

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