Revision of Psammosteus livonicus Obruchev (Agnatha, Heterostraci) from the Devonian Amata Regional Stage of the NW of the East European Platform

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Revision of Psammosteus livonicus Obruchev (Agnatha, Heterostraci) from the Devonian Amata Regional Stage of the NW of the East European Platform. / Glinskiy, Vadim N.; Mark-Kurik, Elga.

In: Estonian Journal of Earth Sciences, Vol. 65, No. 1, 2016, p. 1-18.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{677a32032058432cbee472230bf8c7e9,

title = "Revision of Psammosteus livonicus Obruchev (Agnatha, Heterostraci) from the Devonian Amata Regional Stage of the NW of the East European Platform",

abstract = "The Devonian psammosteid agnathan Psammosteus livonicus Obruchev is revised using analysis of fossil material from collections in Russia, Latvia, Lithuania and Estonia that allowed the diagnosis and description of this species to be substantially extended. P. livonicus is similar to other species of Psammosteus in the characters of the dorsal plate, cyclomorial tesserae and stenobasal shape of the branchial plates. The study of morphology of the branchial plates and tesserae (genus-level features) with consideration of species-level features of the ornamentation proves that establishment of the genus Oredezhosteus Moloshnikov is baseless. The species Psammolepis aerata Obruchev in Halstead Tarlo 1965 and Oredezhosteus kuleshovi Moloshnikov 2009 are included as junior synonyms into the revised species based on the ornamentation features.",

keywords = "Agnatha, Heterostraci, Pteraspidiformes, Psammosteida, Late Devonian, Latvia, NW Russia",

author = "Glinskiy, {Vadim N.} and Elga Mark-Kurik",

year = "2016",

doi = "10.3176/earth.2016.02",

language = "English",

volume = "65",

pages = "1--18",

journal = "Estonian Journal of Earth Sciences",

issn = "1736-4728",

publisher = "Estonian Academy Publishers",

number = "1",

}

RIS

TY - JOUR

T1 - Revision of Psammosteus livonicus Obruchev (Agnatha, Heterostraci) from the Devonian Amata Regional Stage of the NW of the East European Platform

AU - Glinskiy, Vadim N.

AU - Mark-Kurik, Elga

PY - 2016

Y1 - 2016

N2 - The Devonian psammosteid agnathan Psammosteus livonicus Obruchev is revised using analysis of fossil material from collections in Russia, Latvia, Lithuania and Estonia that allowed the diagnosis and description of this species to be substantially extended. P. livonicus is similar to other species of Psammosteus in the characters of the dorsal plate, cyclomorial tesserae and stenobasal shape of the branchial plates. The study of morphology of the branchial plates and tesserae (genus-level features) with consideration of species-level features of the ornamentation proves that establishment of the genus Oredezhosteus Moloshnikov is baseless. The species Psammolepis aerata Obruchev in Halstead Tarlo 1965 and Oredezhosteus kuleshovi Moloshnikov 2009 are included as junior synonyms into the revised species based on the ornamentation features.

AB - The Devonian psammosteid agnathan Psammosteus livonicus Obruchev is revised using analysis of fossil material from collections in Russia, Latvia, Lithuania and Estonia that allowed the diagnosis and description of this species to be substantially extended. P. livonicus is similar to other species of Psammosteus in the characters of the dorsal plate, cyclomorial tesserae and stenobasal shape of the branchial plates. The study of morphology of the branchial plates and tesserae (genus-level features) with consideration of species-level features of the ornamentation proves that establishment of the genus Oredezhosteus Moloshnikov is baseless. The species Psammolepis aerata Obruchev in Halstead Tarlo 1965 and Oredezhosteus kuleshovi Moloshnikov 2009 are included as junior synonyms into the revised species based on the ornamentation features.

KW - Agnatha

KW - Heterostraci

KW - Pteraspidiformes

KW - Psammosteida

KW - Late Devonian

KW - Latvia

KW - NW Russia

U2 - 10.3176/earth.2016.02

DO - 10.3176/earth.2016.02

M3 - Article

VL - 65

SP - 1

EP - 18

JO - Estonian Journal of Earth Sciences

JF - Estonian Journal of Earth Sciences

SN - 1736-4728

IS - 1

ER -

ID: 7547310