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The Permian Basin is the thickest deposit of Permian aged rocks on Earth which were rapidly deposited during the collision of North America and Gondwana (South America and Africa) between the late Mississippian through the Permian. The Permian Basin also includes formations that date back to the Ordovician Period, 445 million years ago .
The Phosphoria Formation of the western United States is a geological formation of Early Permian age. [4] It represents some 15 million years of sedimentation, reaches a thickness of 420 metres (1,380 ft) and covers an area of 350,000 square kilometres (140,000 sq mi).
Prehistoric fish of the Permian period, during the Paleozoic Era. Subcategories. This category has the following 6 subcategories, out of 6 total. Permian ...
The formation has also produced plant, bivalve, conchostracan and vertebrate fossils [2] in locations such as the Spanish Queen mine near Jemez Springs, [11] which date it to the Wolfcampian (lower Permian period). Plant fossils found in the Abo Formation are mostly conifers and show two distinct paleofloras.
Fossils of the Rio do Rasto Formation, and neighboring Permian formations, have revealed a flora composed of plants like glossopterids, sphenophytes and pteridophytes. The fauna is composed of Invertebrates, such as bivalves, gastropods and conchostracans, and vertebrates like palaeonisciform and elasmobranch fish such as Xenacanthus and ...
"Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA)". Palaeontologia Electronica. doi: 10.26879/433. Voigt, Sebastian; Lucas, Spencer G. (2016). "Permian tetrapod footprints from the Lucero Uplift, central New Mexico" (PDF).
The Arroyo Formation, sometimes termed the Lower Clear Fork Formation, is a geologic formation in Texas. [1] It preserves fossils dating back to the Kungurian stage of the Permian period . [ 2 ] It is the lower-most portion of the Clear Fork Group , part of a series of fossiliferous Permian strata in the south-central United States known as the ...
The Spearfish Formation is a geologic formation, originally described from the Black Hills region of South Dakota, United States, but also recognised in North Dakota, Wyoming, Montana and Nebraska. [2] It is a heterogeneous red bed formation, commonly with siltstone and gypsum low in the formation and sandstone and shale higher up. [3]