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Warrior Formation
The Cambrian Warrior Formation is a mapped limestone bedrock unit in Pennsylvania. Description The Warrior Formation is described by Berg and others as gray, thin- to medium-bedded, fossiliferous, cyclic limestone bearing stromatolites, interbedded with shale, siltstone, and sandstone.Berg, T.M. (compiler), 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey State Map, 4th series, 1, 1 sheet, scale 1:250,00/ref> Fossils * Trilobites, including ''Crepicephalus'', ''Cedaria'', '' Llanoaspidella'', and '' Blountia kindlei'' Resser, '' Coosella brevis'' Resser, '' Kingstonia ara'' (Walcott), ''K. kindlei'' Resser, and other ''Kingstonia'' species, '' Menomonia avitas'' (Walcott), ''Blountia'', ''Modocia'', ''Lonchocephalus'', ''Genevievella'', ''Pemphigaspis''.Charles Butts, 1945Hollidaysburg-Huntingdon folio Pennsylvania, Folios of the Geologic Atlas 227. United States Geological Survey. * Brachiopods * ''Cryptozoon'', a type of trace fossil * Stromatolites Notable E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bakers Summit, Pennsylvania
Bakers Summit in Morrisons Cove is located in Bloomfield Township, Bedford County, Pennsylvania. Founded in 1870 and formerly known as Bakersville, it changed its name to Bakers Summit in 1876, when the Bakers Summit Post Office was established. Halter Creek Halter Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 4th, 2020 tributary of the Frankstown Branch of the Juniata River in Bedford and Blair counties, Pennsylvania, in the ... originates near Bakers Summit. External linksMorrisons Cove's Community Website - News and Information for Morrisons Cove, Pennsylvania References {{Bedford County, Pennsylvania Populated places in Bedford County, Pennsylvania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stromatolite
Stromatolites () or stromatoliths () are layered sedimentary formations (microbialite) that are created mainly by photosynthetic microorganisms such as cyanobacteria, sulfate-reducing bacteria, and Pseudomonadota (formerly proteobacteria). These microorganisms produce adhesive compounds that cement sand and other rocky materials to form mineral "microbial mats". In turn, these mats build up layer by layer, growing gradually over time. A stromatolite may grow to a meter or more. Although they are rare today, fossilized stromatolites provide records of ancient life on Earth. Morphology Stromatolites are layered, biochemical, accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains in biofilms (specifically microbial mats), through the action of certain microbial lifeforms, especially cyanobacteria. They exhibit a variety of forms and structures, or morphologies, including conical, stratiform, domal, columnar, and branching ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warriors Mark Township, Huntingdon County, Pennsylvania
Warriors Mark Township is a township in Huntingdon County, Pennsylvania, United States. The population was 1,883 at the 2020 census, a 4.8% increase over the figure tabulated in 2010. It has been named the fastest growing township in Huntingdon County. History Warriors Mark Township is about 25 miles northwest of Huntingdon, in Huntingdon County and about 20 miles southwest of State College in Centre County. In 1768 the village of Warriors Mark was founded. Warriors Mark Township was formed in 1798 from Franklin Township. According to tradition, the name Warriors Mark comes from warriors of the Iroquois Federation marking trees midway between the current villages of Warriors Mark and Spring Mount on the Great Indian Warpath. The area is now experiencing a rapid growth in residential housing due to the expansion of the State College area economy. An Agricultural Security Area was founded in 1989 in the township to protect farmland and covers 8,317 acres. The Birmingham Bridge w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Williamsburg, Pennsylvania
Williamsburg in Morrisons Cove, is a Borough (Pennsylvania), borough in Blair County, Pennsylvania, Blair County, Pennsylvania, United States. The population was 1,241 at the 2020 United States census, 2020 census. It is part of the Altoona, PA Metropolitan Statistical Area. History Before the first settlers arrived in the vicinity of what was later called the Big Spring, this area was part of the hunting grounds of the Lenape and Shawnee (tribe), Shawnee. On July 6, 1754 a treaty was signed at Albany, New York, Albany, New York (state), New York between the Iroquois and the William Penn heirs, opening up portions of the west for settlement. However, British policy forbidding western expansion was in effect until after the American Revolution. The massacre of Captain William Phillips' Rangers took place near Williamsburg in July 1780. Ten men were murdered after surrendering to a party of Indians. On September 17, 1789, George Reynolds took out a patent from the Supreme Executive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stromatolites
Stromatolites () or stromatoliths () are layered sedimentary formations (microbialite) that are created mainly by photosynthetic microorganisms such as cyanobacteria, sulfate-reducing bacteria, and Pseudomonadota (formerly proteobacteria). These microorganisms produce adhesive compounds that cement sand and other rocky materials to form mineral "microbial mats". In turn, these mats build up layer by layer, growing gradually over time. A stromatolite may grow to a meter or more. Although they are rare today, fossilized stromatolites provide records of ancient life on Earth. Morphology Stromatolites are layered, biochemical, accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains in biofilms (specifically microbial mats), through the action of certain microbial lifeforms, especially cyanobacteria. They exhibit a variety of forms and structures, or morphologies, including conical, stratiform, domal, columnar, and branching ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachiopods
Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, while the front can be opened for feeding or closed for protection. Two major categories are traditionally recognized, articulate and inarticulate brachiopods. The word "articulate" is used to describe the tooth-and-groove structures of the valve-hinge which is present in the articulate group, and absent from the inarticulate group. This is the leading diagnostic skeletal feature, by which the two main groups can be readily distinguished as fossils. Articulate brachiopods have toothed hinges and simple, vertically-oriented opening and closing muscles. Conversely, inarticulate brachiopods have weak, untoothed hinges and a more complex system of vertical and oblique (diagonal) muscles used to keep the two valves aligned. In many brachiopods, a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingstonia
''Kingstonia'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million .... References Ptychoparioidea Ptychopariida genera Cambrian trilobites Fossils of Greenland Paleozoic life of Newfoundland and Labrador Paleozoic life of the Northwest Territories Paleozoic life of Yukon {{Ptychopariida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coosella
''Coosella'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million .... References Ptychopariida genera Cambrian trilobites Extinct animals of North America Fossils of Georgia (U.S. state) Paleozoic life of Newfoundland and Labrador Paleozoic life of Yukon Cambrian genus extinctions {{Ptychopariida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llanoaspidella
''Llanoaspidella'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million .... References Llanoaspididae Ptychopariida genera Cambrian trilobites Trilobites of North America {{Ptychopariida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cedaria
''Cedaria'' is a small, rather flat trilobite with an oval outline, a headshield and tailshield of approximately the same size, 7 articulating segments in the middle part of the body and spines at the back edges of the headshield that reach halflength of the body. ''Cedaria'' lived during the early part of the Upper Cambrian (Dresbachian), and is especially abundant in the Weeks Formation. Description ''Cedaria'' has an ovate outline of long on average (maximum size 2.5 cm) and ¾ as wide between the tips of the genal spines. The headshield (or cephalon) is parabolic in shape with a well defined wide, and typically darker colored border of about 10% of the glabellar length or equal to a thorax segment. The well-defined central raised area (or glabella) tapers slightly forward with a rounded front, but lateral furrows are weakly defined. The backward occipital ring is well defined. The distance between the glabella and the border (or preglabellar field) is ±¼ as long as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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