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

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

doi:10.26879/890

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

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

College of Science and Engineering

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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 language	English
Article number	22.2.23
Pages (from-to)	1-19
Number of pages	19
Journal	Palaeontologia Electronica
Volume	22
Issue number	2
DOIs	https://doi.org/10.26879/890
Publication status	Published - 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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10.26879/890

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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.",

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

Abstract

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Keywords

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