The Capitanium (also shortened to Capitan ) the uppermost stratigraphic stage ( or geochronologisches age ) of Mittelperm or Guadalupium series. The stage covers the period from about 265.1 million years ago to 259.9 million years. The Capitanium follows under superimposed on the Wordium and is superimposed on Wuchiapingium.
Naming and history
The stage and the name has already been proposed by George Burr Richardson 1904. The eponymous locality is the Capitan Reef in the Guadalupe Mountains in Texas, USA. In 1961, Brian F. Glenister and Furnish, William Madison the Capitanium defined as chronostratigraphic sub- stage of their, at that time regional stage of Guadalupiums. 2001 Capitanium was ratified as a global chronostratigraphic stage of the IUGS .
Definition and GSSP
The first appearance of the conodont species Jinogondolella postserrata marks the beginning of the stage. The end is defined by the first appearance of postbitteri postbitteri conodont subspecies Clarkina. The type locality ( GSSP ) of the Capitanium located at Nipple Hill in the southern Guadalupe Mountains in Texas, USA.
The Capitanium covers the entire Timorites - Ammonitenbiozone. It can be divided into three conodont biozones:
- Zone of Clarkina postbitteri hongshuiensis
- Zone of Jinogondolella altudaensis
- Zone of Jinogondolella postserrata
The fusuliniden large Foraminifera allow the distinction of two biozones:
- Rausserella zone
- Afganella Schenki
The Capitanium - stage corresponds in Central Europe, the lithostratigraphic unit of Oberrotweil Lying and the upper part of the old Saxonium level. In the eastern Tethys the Capitanium corresponds to the upper part of the regional Murgabium - level, regional - level Midium and the lower part of the regional Laibinium level. In Russia, the lower part of the regional Severodvinium - level correlated with the Capitanium.