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Spirifer Bambadhurensis
''Spirifer'' is a genus of marine brachiopods belonging to the order Spiriferida and family Spiriferidae. Species belonging to the genus lived from the Middle Ordovician (Sandbian) through to the Middle Triassic (Carnian) with a global distribution. They were stationary epifaunal suspension feeders.''Spirifer'' at .org Selected species * '' Spirifer acutiplicatus'' Hayasaka, 1933 * '' Spirifer bambadhurensis'' Diener, 1903 * '' |
Sandbian
The Sandbian is the first stage of the Upper Ordovician. It follows the Darriwilian and is succeeded by the Katian. Its lower boundary is defined as the first appearance datum of the graptolite species '' Nemagraptus gracilis'' around million years ago. The Sandbian lasted for about 5.4 million years until the beginning of the Katian around million years ago. Naming The name Sandbian is derived from the village Södra Sandby (Lund Municipality, Skåne County, Sweden). The name was proposed in 2006. GSSP The GSSP of the Sandbian is the Fågelsång section () at Sularp Brook, east of Lund (Skåne, Sweden). It is an outcrop of shale and mudstone. The lower boundary of the Sandbian is defined as the first appearance datum of graptolite Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding organisms are known chiefly from fossils found from the Middle Cambrian (Miaolingian, Wuliuan) through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirifer Baschkirica
''Spirifer'' is a genus of marine brachiopods belonging to the order Spiriferida and family Spiriferidae. Species belonging to the genus lived from the Middle Ordovician ( Sandbian) through to the Middle Triassic (Carnian) with a global distribution. They were stationary epifaunal suspension feeders.''Spirifer'' at .org Selected species * '' Spirifer acutiplicatus'' Hayasaka, 1933 * '' Spirifer bambadhurensis'' Diener, 1903 * ''[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |