X-Nico

unusual facts about Upper Cretaceous



Camiers

In its highest part, the commune rises onto the Upper Cretaceous at 176 metres but most lies on the levelled marine sand which in the medieval period, was off-shore.


see also

Cathedral Peak Granodiorite

It has been assigned radiometric ages between 88 and 87 million years and therefore reached its cooling stage in the Coniacian (Upper Cretaceous).

Centropomidae

Dating from the upper Cretaceous, the centropomids are of typical percoid shape, distinguished by having two-part dorsal fins, a lateral line that extends onto the tail, and, frequently, a concave shape to the head.

Cimexomys

Fossils come from the Campanian (Upper Cretaceous) of the Two Medicine Formation of Montana (USA).

Gondwanatherium

The species Gondwanatherium patagonicum was discovered in Los Alamitos Formation, Río Negro Province, Patagonia, Argentina in deposits dating to the Upper Cretaceous period.

Hallirhoidae

The highest concentration of species occurred in the Tethys Ocean during the upper Cretaceous.

Marl

Upper Cretaceous cyclic sequences in Germany and marl–opal-rich Tortonian-Messinian strata in the Sorbas basin related to multiple sea drawdown have been correlated with Milankovitch orbital forcing.

Pycnonemosaurus

It was found in the Upper Cretaceous Bauru-type red conglomerate sandstone, in the Mato Grosso, in Brazil and lived about 70 million years ago, during the Late Cretaceous (Maastrichtian stage).