Comments on the Squamation of Polish Lower Devonian Porolepiforms

Wilk, Olga (author): Univ Warsaw, Fac Geol, 93 Zwirki & Wigury St, PL-02089 Warsaw, Poland; Polish Geol Inst, Natl Res Inst, 4 Rakowiecka St, PL-00975 Warsaw, Poland

Szrek, Piotr (author): Univ Warsaw, Fac Geol, 93 Zwirki & Wigury St, PL-02089 Warsaw, Poland; Polish Geol Inst, Natl Res Inst, 4 Rakowiecka St, PL-00975 Warsaw, Poland

Dec, Marek (author): Polish Geol Inst, Natl Res Inst, 4 Rakowiecka St, PL-00975 Warsaw, Poland; Polish Acad Sci, Inst Palaeobiol, 51-55 Twarda St, PL-00818 Warsaw, Poland

Glinka, Bartosz (author)

Ahlberg, Per E., 1963- (author): Uppsala universitet,Evolution och utvecklingsbiologi

(creator_code:org_t)

2020-05-15
2019
English.
In: Journal of Vertebrate Paleontology. - : Informa UK Limited. - 0272-4634 .- 1937-2809. ; 39:6

Related links:: https://doi.org/10.1...; show more...; https://uu.diva-port... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

Porolepiform scales from the Lower Devonian of the Holy Cross Mountains, Poland, described from the ‘placoderm sandstone’ of the Daleszyce area, are revised. The aim of the present article is to organize the recently collected, but not formally described, porolepiform material from the Holy Cross Mountains, as well as specimens from erratic boulders collected near Gdynia (northernmost Poland), which can be referred to Porolepis. Previously collected and new material was found to contain at least two sarcopterygian taxa: Porolepis and Heimenia. Based on morphological and histological features, the described material has been divided into two scale assemblages. The first, which is assigned to Porolepis, possesses cosmine cover on the entire exposed area; in the second, assigned to Heimenia, the cosmine cover is reduced or absent. These features prove to be stable regardless of the position of the scale on the body and thus are taxonomically informative.

By the author/editor: Wilk, Olga; Szrek, Piotr; Dec, Marek; Glinka, Bartosz; Ahlberg, Per E., ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Evolutionary Bio ...

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