Results 51 to 60 of about 1,568 (161)
The Early Cretaceous of North Africa has Spinosaurinae dinosaur remains such as Spinosaurus recorded in Algeria (Guir Basin, Kem Kem beds), Egypt (Bahariya Formation), Morocco (Kem Kem beds), and Tunisia (Ain El Guettar Formation).
Candeiro Carlos Roberto A. +2 more
doaj +1 more source
Albian sedimentation in western Atlas, Morocco
Detailed study of field sections and extensive ammonite collection allowed to specify the sedimentary evolution and age of the Albian series of the Western Atlas (Morocco). After a significant hiatus of earliest Albian age, the Albian transgression began in the late Douvilleiceras leightonense Zone with partly clastic deposits.
Jaillard, Etienne +3 more
openaire +3 more sources
Abstract The fossil record of coelacanths (Actinistia) is diminished by several nominal gaps that obscure vital information pertaining to the clade's evolutionary history. Latimeriidae, the family that includes the extant coelacanth Latimeria, in addition to the Cenozoic, has an outstanding missing gap of 50 myr during the Mesozoic, with no records of ...
Jack L. Norton +4 more
wiley +1 more source
Additions to Albian (Cretaceous) Crustacea from Iran
Two species of decapod crustaceans are described from upper Albian sediments of Central Iran. The small mecochirid lobster Huhatanka iranica n. sp. represents the second species of this genus, previously known from the Albian of Kansas, USA. Callianassa sensu lato is reported as an associated crustacean.
Mehdi Yazdi +2 more
openaire +2 more sources
Seismic profile across the Guyana Basin showing the main tectonostratigraphic units and an order‐of‐magnitude increase in sedimentation rates since the Middle Miocene corresponding with the onset of sedimentation dominated by mass transport deposits. ABSTRACT The Guyana Basin developed in an evolving tectonic setting, but a lack of subsurface data has ...
Deron Saul, Uisdean Nicholson
wiley +1 more source
The object of our research is hydrogeochemical conditions of the Mesozoic hydrogeological basin within Yamalo-Nenets oil and gas bearing region. The Mesozoic basin includes the Aptian-Albian-Cenomanian, Neocomian and Jurassic hydrogeological complexes ...
V. A. Beshentsev +3 more
doaj +1 more source
First Record of Chimaeroid Fish (Holocephali: ’Edaphodontidae’) from the Lower Cretaceous of the Middle Volga Region [PDF]
The record of a mandibular tooth plate of the chimaeroid fish Ischyodus sp. from the Lower Cretaceous deposits of the north of the Saratov Volga River Right Bank is described. The presumed age of the find is the Lower Aptian.
Popov, Evgeniy Valerievich +1 more
doaj +1 more source
A number of small Callovian-Albian sedimentary basins occur in the NE-trending Araripe-Potiguar topographic lowlying area. These basins developed in a fairly narrow zone of Precambrian supracrustal rocks from the Middle Jurassic onwards, as a consequence
L. M. M. Valença +2 more
doaj +1 more source
100 Ma sweat bee nests: Early and rapid co-diversification of crown bees and flowering plants.
100 Ma sweat bee nests reported herein are the oldest evidence of crown bees. A new phylogeny for short-tongued bees, calibrated with these nests dated with 40Ar/39Ar, attests for the first time for a late Albian rapid diversification of bees along with ...
Jorge Fernando Genise +9 more
doaj +1 more source

