Middle Jurassic ammonoid jaws (anaptychi and rhynchaptychi) from Dagestan, North Caucasus, Russia
Sign Up to like & getrecommendations! Published in 2018 at "Palaeogeography, Palaeoclimatology, Palaeoecology"
DOI: 10.1016/j.palaeo.2017.10.003
Abstract: Abstract The Middle and Upper Jurassic stage of evolution of the anaptychus-type ammonoid jaw apparatus is relatively poorly known due to a small number of findings and uncertainty of their taxonomic position. All previously found… read more here.
Keywords: russia; jaws; middle jurassic; jurassic ammonoid ... See more keywords
Taxonomic Relationships and Paleoecological Significance of Two Exceptionally Large Lower Jaws of Late Cretaceous Ammonoids from Japan
Sign Up to like & getrecommendations! Published in 2019 at "Paleontological Research"
DOI: 10.2517/2018pr015
Abstract: Abstract. Two exceptionally large cephalopod jaws collected from the Upper Cretaceous marine deposits of the Hidaka area, Hokkaido (Yezo Group), and Awaji Island, Southwest Japan (Izumi Group), respectively, are described. Further, their taxonomic relationships and… read more here.
Keywords: lower jaws; taxonomic relationships; two exceptionally; exceptionally large ... See more keywords