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Mollusc trace fossils .i.Ptychoplasma./i. Fenton and Fenton, 1937 and .i.Oravaichnium./i. Plička and Uhrová, 1990: Their type material and ichnospecies
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SYSNO ASEP 0363166 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Mollusc trace fossils Ptychoplasma Fenton and Fenton, 1937 and Oravaichnium Plička and Uhrová, 1990: Their type material and ichnospecies Tvůrce(i) Uchman, A. (PL)
Mikuláš, Radek (GLU-S) RID, SAI
Rindsberg, A. K. (US)Zdroj.dok. Geobios. - : Elsevier - ISSN 0016-6995
Roč. 44, č. 4 (2011), s. 387-397Poč.str. 11 s. Forma vydání WWW - WWW Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova locomotion trace fossils ; Bivalves ; flysch ; Carboniferous ; Cretaceous ; Paleogene Vědní obor RIV DB - Geologie a mineralogie CEP GA205/05/0917 GA ČR - Grantová agentura ČR CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000294380000006 EID SCOPUS 80051670802 DOI 10.1016/j.geobios.2010.08.001 Anotace Ichnogenera belonging to cleft-foot and wedge-foot bivalves can in most cases be distinguished. This paper addresses the taxonomy of locomotion traces made by wedge-foot bivalves. Ichnogenera Ptychoplasma Fenton and Fenton and Oravaichnium Plička and Uhrová are reviewed together with related ichnotaxa. Both are interpreted as the locomotion traces of non-cleft, wedge-foot bivalves. Both are usually preserved as hypichnial ridges that include a distinctive bioprint of amygdaloid segments. Ptychoplasma is dominated by amygdaloid segments whereas Oravaichnium is wall-like with only sporadic amygdaloid segments. Ichnospecies of Ptychoplasma are distinguished on the basis of their continuity: P. excelsum Fenton and Fenton (the type) is a relatively continuous trace fossil consisting largely of welded, imbricated amygdaloid segments; P. conica Pieńkowski and Uchman is less welded and consists of conical mounds; and P. vagans (Książkiewicz) consists of a largely discontinuous series of such segments. Only one ichnospecies of Oravaichnium is yet recognized, the type O. hrabei Plička and Uhrová. Tuberculichnus Książkiewicz is a valid ichnogenus, based on its type species T. meandrinus Książkiewicz, but another ichnospecies, T. vagans Książkiewicz, belongs to Ptychoplasma. Hostynichnium Plička and Siráňová is regarded as a junior synonym of Ptychoplasma; its only ichnospecies, H. duplex Plička and Siráňová, is a junior synonym of P. vagans. Lockeia serialis Seilacher and Seilacher, 1994 is a nomen nudum and belongs to Ptychoplasma. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2012
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