Posttornoceras posthumum
Sugerowana cytacja: Dzik, J. 2015. Posttornoceras posthumum (Wedekind, 1918) . Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/viewrev/Species/Posttornoceras+posthumum+)
 Posttornoceras (or Xenosporadoceras) posthumum (Wedekind, 1918) from the D. trigonica Zone at Kowala in the Holy Cross Mountains. Diagnoza Suture with wide, convex ventrolateral saddle and acute lateral saddle. Porównanie The conch ornamentation shows small auricles and probably shallow ventral sinus associated with longitudinal striae, features typical of Xenosporadoceras ademmeri Korn, 2002 from the P. annulata fauna at Kattensiepen. The main difference is in a more flattened conch and less derived suture in the mid Famennian species. Whether this is the same lineage characterized by longitudinally striated conchs or rather a case of convergence has to be settled out. Autekologia Występowanie geograficzne Kowala. Zasięg czasowy D. trigonica Zone. Materiały muzealne ZPAL: 10 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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