Lochkovian

From Wikipedia, the free encyclopedia
Jump to: navigation, search
System/
Period
Series/
Epoch
Stage/
Age
Age (Ma)
Carboniferous Mississippian Tournaisian recent
Devonian Late Famennian 372.2–358.9
Frasnian 382.7–372.2
Middle Givetian 387.7–382.7
Eifelian 393.3–387.7
Early Emsian 407.6–393.3
Pragian 410.8–407.6
Lochkovian 419.2–410.8
Silurian Pridoli no faunal stages defined older
Subdivision of the Devonian system according to the ICS.[1]

The Lochkovian is one of three faunal stages in the Early Devonian epoch. It lasted from 416 ± 2.8 million years ago to 411.2 ± 2.8 million years ago. It marked the beginning of the Devonian Period, and was followed by the Pragian stage.

In North America the Lochkovian Stage is represented by Gedinnian or Helderbergian time.

Palaeontology[edit]

Agnathans[edit]

Agnathans of the Lochkovian
Taxa Presence Location Description Images
Lochkovian-Emsian Hunsrück Slate Formation, Germany, among others in Europe
Lochkovian-Emsian Wayne Hereford Quarry, England & Podolia, Ukraine
Lochkovian-Emsian Britain & Belgium

References[edit]

  1. ^ "International Chronostratigraphic Chart". International Commission on Stratigraphy. Retrieved 9 December 2012. 
Preceded by Proterozoic Eon Phanerozoic Eon
Paleozoic Era Mesozoic Era Cenozoic Era
Cambrian Ordovician Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Paleogene Neogene 4ry