Open AccessAlbian and Cenomanian ammonites from the island of Bornholm (Denmark)
Author(s) -
William J. Kennedy,
John M. Hancock,
Walter Kegel Christensen
Publication year - 1981
Publication title -
bulletin of the geological society of denmark
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.674
H-Index - 28
eISSN - 2245-7070
pISSN - 0011-6297
DOI - 10.37570/bgsd-1980-29-13
Subject(s) - cenomanian , ammonite , conglomerate , geology , cretaceous , paleontology , sedimentary rock
The ammonite faunas from the Arnager Greensand and its conglomerate on the island of Bomholm (Denmark) are revised. Three time intervals are represented in the phosphatic conglomerate. The ammonites from the primary nodules represent two time intervals in the Lower Albian ( Leymeriella tardefurcata and Douvil/eiceras mammilatum Zones). The ammonites from the phosphatized matric of the secondary nodules are assigned to the Lower Cenomanian (Mantelliceras saxbii and/or M. dixoni Zones). The Arnager Greensand sensu stricto is low in the Middle Cenomanian (Turrilites costatus Zone) on the basis of ammonites and plank tic foraminifers. The transgressive history of the Mid-Cretaceous on the island of Bornholm is outlined.