Cochlioceras roemeri
Sugerowana cytacja: Moczyński 2019. Cochlioceras roemeri Dzik 1984. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/viewrev/Species/Cochlioceras+roemeri)
 Cochlioceras roemeri Dzik, 1984 from Baltic erratic boulders, Poland; restoration of adult conch based on specimens from boulder E-252, Rozewie (a), longitudinal section of the siphuncle (b) and cameral and siphuncular deposits of ZPAL N/001 (f). Cochlioceras burchardi (Dewitz, 1880) from Baltic erratic boulders; restoration of adult conch based mostly on specimens from boulder E-149, Międzyzdroje (d) and longitudinal section of the siphuncle (e) Diagnoza Ventral siphuncle up to one third of the shell in diameter, filled with deposits in its apical part; siphuncular deposits in form of massive rod at ventral side, with flat rings at septal necks; cameral deposits well developed. Porównanie C. roemeri Dzik, 1984 does not differ externally from its congeners. Its uniqueness consists in its much wider siphuncle. It differs from C. burchardi also in its siphuncle lying a little away from the shell wall and, consequently, in its straight septal suture. Autekologia Występowanie geograficzne glacial drift in Poland; possibly also coeval strata in Estonia Zasięg czasowy erratic boulders of the E. reclinatus Zone (Folkeslunda Limestone) and Volkhovian or Kundan . Materiały muzealne ZPAL Literatura Dzik, J. 1984. Phylogeny of the Nautiloidea. Palaeontologia Polonica 45, 1-255 |
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