Hemilistrona homoirregularis Ziegler, 1971
Sugerowana cytacja: Dzik 2015. Hemilistrona homoirregularis Ziegler 1971. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/view/Species/Hemilistrona+homoirregularis+)
Diagnoza Mature P1 and P2 element with posterior platform tongue bent downward and ornamented with tubercles. Porównanie Except for the mature P1 elements, there is a puzzling variability in virtually all aspects of the platform shape and ornamentation. This is probably the most variable population of polygnathids in the Famennian of the Holy Cross Mts. There is a transition to morphologies classified here as Hemilistrona margaritata, Polygnathus? experplexus and even Neopolygnathus communis. Until population and apparatus studies on much larger and taxonomically less diverse material are performed, this classification can be treated only as provisional. Autekologia Występowanie geograficzne Ostrówka, Miedzianka, Kowala and Jabłonna. Zasięg czasowy P. trachytera to L. jugosus Zones. Materiały muzealne ZPAL: 810 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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