Polygnathus experplexus Sandberg & Ziegler, 1979
Sugerowana cytacja: Dzik 2015. Polygnathus experplexus Sandberg & Ziegler 1979. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/view/Species/Polygnathus+experplexus+)
Diagnoza P1 elements with two tuberculated rostral ridges and lobate platform ornamented with tubercles. Porównanie The origin of the species remains unsettled. P1 elements show some similarity to Hemilistrona perplexa, but the apparatus is rather different and its morphology may suggest an origin from Polygnathus praecursor. In early populations of probable P.? experplexus the mature P1 elements are convex centrally (near the cusp), wheareas in typical populations the corresponding part of the platform is gently concave. Autekologia Występowanie geograficzne Jabłonna, Ostrówka, Kowala, and Dzikowiec. Zasięg czasowy L. styriacus and P. jugosus Zones. Materiały muzealne ZPAL: 554 specimens. Literatura Dzik, J. 2006. The Famennian "Golden Age" of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359. |
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