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The Warrawoona Group is a geological unit in Western Australia containing putative fossils of cyanobacteria cells. Dated 3.465 Ga, these microstructures, found in Archean chert, are considered to be the oldest known geological record of life on Earth. [1] [2] [3]
Jimba Jimba Station, most often referred to as Jimba Jimba, is a pastoral lease currently operating as a cattle station in Western Australia, that once operated as a sheep The property is situated near Gascoyne Junction , approximately 150 kilometres (93 mi) east of Carnarvon and 310 kilometres (190 mi) north of Kalbarri .
The numerous calcareous plates make up the bulk of the crinoid, with only a small percentage of soft tissue. These ossicles fossilise well and there are beds of limestone dating from the Lower Carboniferous around Clitheroe, England, formed almost exclusively from a diverse fauna of crinoid fossils. [15] Stalked crinoid drawn by Ernst Haeckel
Jimbacrinus bostocki Artinskian of Australia. (Found near Jimba Jimba Station). The Artinskian is named after the goniatite grits of Artinsk which was introduced by Roderick Murchison, Édouard de Verneuil and count Alexander von Keyserling in their The Geology of Russia in Europe and the Ural Mountains (1845). [4]
Western Pacific [62]: 112 [20]: 102 Allagecrinus. Carpenter & Etheridge 1881 A. austinii Carpenter & Etheridge, 1881 Allagecrinidae extinct Devonian (Famernnian) to Pennsylvanian (Bashkirian) North America, United Kingdom [63]: 282 Allionia [wiki link is to a plant, not the crinoid] Michelotti 1861 A. oblita Michelotti, 1861
The Gogo Formation in the Kimberley region of Western Australia is a Lagerstätte that exhibits exceptional preservation of a Devonian reef community. The formation is named after Gogo Station , a cattle station where outcrops appear and fossils are often collected from, [ 1 ] as is nearby Fossil Downs Station .
Pentacrinites is an extinct genus of crinoids that lived from the Hettangian to the Bathonian of Asia, Europe, North America, and New Zealand.Their stems are pentagonal to star-shaped in cross-section and are the most commonly preserved parts. [1]
This genus is known in the fossil record from the Devonian period to the Permian period (age range: 360.7 to 290.1 million years ago). [3] Fossils of species within this genus have been found in Australia, China, Europe and United States.