Results 101 to 110 of about 12,814 (219)

Remarks on the type locality and current status of the foraminiferal species Rzehakina epigona (Rzehak, 1895) [PDF]

open access: yes, 2001
A likely topotype locality is proposed for Rzehakina epigona. As the type specimen of Silicina epigona Rzehak, 1895 is assumed to be lost, we undertook a search for new material in the type area, Zdounky village in Moravia. A single locality provided a
Bubik, M., Kaminski, M.A.
core  

South Atlantic continental margins of Africa: a comparison of the tectonic vs climate interplay on the evolution of equatorial west Africa and SW Africa margins

open access: yes, 2005
The comparative review of 2 representative segments of Africa continental margin: the equatorial western Africa and the SW Africa margins, helps in analysing the main controlling factors on their development.
Anka, Zahie, Seranne, Michel
core   +2 more sources

European ammonoid diversity questions the spreading of anoxia as primary cause for the Cenomanian/Turonian (Late Cretaceous) mass extinction [PDF]

open access: yes, 2018
.: Ammonoid diversity patterns show that the spreading of oceanic anoxia is not the initial and major kill mechanism for the Cenomanian/Turonian mass extinction as usually suggested.
Bucher, Hugo, Monnet, Claude
core  

The so-called Turonian-Coniacian boundary in Japan

open access: yesBulletin of the Geological Society of Denmark, 1984
The Mikasa area of central Hokkaido provides a series of reference sections of an Upper Turonian and Coniacian mega-fossil sequence. There are four places within the area where continuous outcrops are visible and these are described in detail. There is considerable variation in the mode of occurrence of ammonite and inoceramid species from place to ...
openaire   +1 more source

The oldest stratigraphic record of the Late Cretaceous shark Ptychodus mortoni Agassiz, from Vallecillo, Nuevo León, northeastern Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
In this paper we report the oldest geologic world record of Ptychodus mortoni, from the Vallecillo Member (Agua Nueva Formation), at Vallecillo, Nuevo León, northeastern Mexico.
Alberto Blanco-Piñón   +2 more
doaj  

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