A New Species of Eubostrychoceras (Ammonoidea, Nostoceratidae) from the Lower Campanian in the Northwestern Pacific Realm

@article{Aiba2017ANS,
  title={A New Species of Eubostrychoceras (Ammonoidea, Nostoceratidae) from the Lower Campanian in the Northwestern Pacific Realm},
  author={D. Aiba and Harunobu Yamato and Ken'ichi Kurihara and Tomoki Karasawa},
  journal={Paleontological Research},
  year={2017},
  volume={21},
  pages={255 - 264}
}
  • D. Aiba, Harunobu Yamato, +1 author Tomoki Karasawa
  • Published 2017
  • Geology
  • Paleontological Research
  • Abstract. A new species of heteromorph ammonoid Eubostrychoceras valdelaxum sp. nov. is described from the Platyceramus japonicus Zone (the lowermost Campanian) of the Haboro and Mikasa areas in Hokkaido, northern Japan. The most notable characteristic of E. valdelaxum sp. nov. is its extremely longitudinally elongated helical whorls. The new species is clearly distinguished from other species by this characteristic. The shell ornamentation and whorl expansion rate of the new species resemble… CONTINUE READING
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