Phthanoncoceras ellipticum
Sugerowana cytacja: Moczyński 2020. Phthanoncoceras ellipticum (Lossen, 1860) Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/viewrev/Species/Phthanoncoceras+ellipticum)
 Phthanoncoceras ellipticurn (Lossen 1860), Lasnamägian (late Llanvirn; Darriwilian), glacial erratic boulders of Baltic origin, a-b: Lectotype in lateral and ventral views; Żary (Lower Silesia). c: Longitudinally split specimen of H. Patrunky, Bydgoszcz. d-e: Juvenile specimen in lateral and ventral views, same boulder. Diagnoza Long body chamber, only a little less than half of the whole conch lenght. Conch gently curved, compression index at adult stages is about 0,7. Porównanie Autekologia Występowanie geograficzne Baltic erratic boulders and Folkeslunda Limestone of southern Sweden. Zasięg czasowy early Kundan to late Lasnamägian, Darriwilian Materiały muzealne Naturkunde Museum Berlin MB C.872, C.873 and C.869; Naturhistoriska Riksmuseet, Stockholm Literatura Dzik, J. & Kiselew, G.N. 1995. The Baltic nautiloids Cyrtoceras ellipticum Lossen 1860, C. priscum Eichwald 1861, and Orthoceras damesi Krause 1877, Paläontologische Zeitschrift 69: 61-71. Evans, D. H., & King, A. H. 1990. The affinities of early oncocerid nautiloids from the Lower Ordovician of Spitsbergen and Sweden. Palaeontology, 33, 623–630. |
|
