List Of Fossiliferous Stratigraphic Units In Maryland

	List Of Fossiliferous Stratigraphic Units In Maryland This article contains a list of fossil-bearing stratigraphic units in the state of Maryland, U.S. Sites See also * Paleontology in Maryland References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Maryland Maryland Stratigraphic units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, p ... Stratigraphy of Maryland Maryland geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Stratigraphic Units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, paleontologic features (facies) that characterize it. Units must be ''mappable'' and ''distinct'' from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as "when the sandstone component exceeds 75%". Lithostratigraphic units Sequences of sedimentary rock, sedimentary and volcanic rocks are subdivided the basis of their shared or associated lithology. Formally identified lithostratigraphic units are structured in a hierarchy of lithostratigraphic rank, higher rank units generally comprising two or more units of lower rank. Going from smaller to larger in rank, the main lithostratigraphic ranks are Bed, Member, Formation, Group and Supergroup. Formal names of lithostratigraph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Choptank Formation The Choptank Formation is a geologic formation in Virginia and Maryland. It preserves fossils dating from the Miocene epoch of the Neogene period. Fossils The Choptank Formation is extremely fossiliferous. Some of the fossil species represented include the following: Sharks ''Otodus megalodon'' ''Carcharodon hastalis'' '' Isurus oxyrhincus'' Carcharomodus escheri '' Physogaleus contortus'' ''Galeocerdo aduncus'' ''Carcharhinus'' ''Hemipristis serra'' '' Squatina sp.'' '' Notorhyncus cepedianus'' ''Carcharias'' '' Isurus retroflexus'' '' Parotodus benedeni'' ''Alopias vulpinus'' '' Alopias grandis'' ''Cetorhinus'' '' Negaprion brevirostris'' ''Rhizoprionodon'' '' Sphryna laevissima'' Rays and Other Cartilaginous Fish ''Aetobatus arcuatus'' '' Pteromyaleus sp.'' ''Dasyatis rugosa'' ''Dasyatis probsti'' '' Pinthicus stenodon'' Fish ''Acipenseridae indet.'' ''Opsanus sp.'' ''Serranidae sp.'' '' Pogonias sp.'' ''Sciaenops sp.'' ''Tautoga sp.'' ''Acanth ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Magothy Formation The Magothy Formation is a geologic formation in Maryland. It preserves fossils dating back to the Turonian stage of the Cretaceous period. See also * List of fossiliferous stratigraphic units in Maryland * Paleontology in Maryland The location of the state of Maryland Paleontology in Maryland refers to paleontological research occurring within or conducted by people from the U.S. state of Maryland. The invertebrate fossils of Maryland are similar to those of neighboring D ... References Geologic formations of Maryland Geologic formations of New Jersey Cretaceous Maryland Cretaceous geology of New Jersey Upper Cretaceous Series of North America Turonian Stage {{Maryland-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Jennings Formation The Jennings Formation is a geologic formation in Maryland. It preserves fossils dating back to the Devonian period. See also * List of fossiliferous stratigraphic units in Maryland * Paleontology in Maryland The location of the state of Maryland Paleontology in Maryland refers to paleontological research occurring within or conducted by people from the U.S. state of Maryland. The invertebrate fossils of Maryland are similar to those of neighboring D ... References Additional sources * Devonian Maryland Devonian geology of Pennsylvania Devonian southern paleotemperate deposits {{Maryland-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Greenland Gap Group The Greenland Gap Group is a geologic group in West Virginia. It preserves fossils dating back to the Devonian period. See also * List of fossiliferous stratigraphic units in West Virginia This article contains a list of fossil-bearing stratigraphic units in the state of West Virginia, U.S. Sites See also * Paleontology in West Virginia References * {{DEFAULTSORT:Fossiliferous stratigraphic units in West Virginia West V ... References * Geologic groups of West Virginia {{Devonian-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Foreknobs Formation The Devonian Foreknobs Formation is a mapped bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia. Description The Foreknobs Formation contains massive sandstones; siltstone; "redbeds" of brownish-gray sandstone, siltstone, and shale containing scattered marine fossils; and occasional quartz-pebble conglomerate or conglomeratic sandstone beds. Stratigraphy Dennison (1970) renamed the old Chemung Formation the Greenland Gap Group and divided it into the lower Scherr Formation and the upper Foreknobs Formation. De Witt (1974) extended the Scherr and Foreknobs into Pennsylvania, but did not use the term Greenland Gap Group. Boswell, et al. (1987), does not recognize the Scherr and Foreknobs Formations in the subsurface of West Virginia and thus these formations are reduced from "group" to "formation" as the Greenland Gap Formation. Rossbach and Dennison (1994) extended the Foreknobs into the Catawba syncline of southwestern Virginia.Rossbach, T.J., and Dennison, J. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the sauropsids ( reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these drier conditions, rose to dominance in place of their am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Greene Formation The Greene Formation is a Formation (geology), geologic formation in West Virginia, Ohio, Maryland, Virginia and Pennsylvania. It preserves fossils dating back to the Permian Period (geology), period. See also * List of fossiliferous stratigraphic units in West Virginia References * Permian Maryland Permian West Virginia Permian Ohio Permian geology of Pennsylvania Permian geology of Virginia {{permian-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Dunkard Group The Permian Dunkard Group (Pd) is an area of rock, Early Permian in age, in the south of Ohio, southwestern Pennsylvania, West Virginia and the hilltops of the Georges Creek Basin of Maryland. In Ohio, it is found primarily in Washington County. It is notable for being one of the few areas of Permian sediment east of the Mississippi River. In addition, it is the youngest surface rock in the state of Ohio. Description It consists of red and green shale, siltstone, and sandstone, with thin lenticular beds of argillaceous limestone and thin beds of impure coal The base of the layer contains thick-bedded, white conglomeratic sandstone. The layer's thickness is greater than 200 feet in Maryland. The fossils found in the Dunkard Group are similar to ones found in Texas and Oklahoma of similar age. Fossil content * ''Dimetrodon'' * ''Ctenospondylus'' * ''Archaeothyris'' * ''Edaphosaurus'' * ''Eryops'' * ''Xenacanthus'' * ''Ophiacodon'' * ''Diploceraspis'' * ''Diplocaulus'' * ''B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Conemaugh Group The Conemaugh Group is a geologic group in West Virginia, Pennsylvania, Ohio, and Maryland. It preserves fossils dating back to the Carboniferous period. See also * List of fossiliferous stratigraphic units in West Virginia This article contains a list of fossil-bearing stratigraphic units in the state of West Virginia, U.S. Sites See also * Paleontology in West Virginia References * {{DEFAULTSORT:Fossiliferous stratigraphic units in West Virginia West V ... References * Carboniferous West Virginia Carboniferous Maryland Carboniferous geology of Pennsylvania {{Carboniferous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Rose Hill Formation The Rose Hill Formation is a geologic formation in West Virginia, United States. This formation dates back to the Silurian period, and is a source of iron ore for nearby foundries A foundry is a factory that produces metal castings. Metals are cast into shapes by melting them into a liquid, pouring the metal into a mold, and removing the mold material after the metal has solidified as it cools. The most common metals pr .... History The region has historically had numerous names by different geological agencies. West Virginia adopted the name Rose Hill Formation, and the name appears on the Geologic Map of West Virginia. References * Silurian Maryland Silurian West Virginia Silurian geology of Pennsylvania Silurian geology of Virginia Silurian southern paleotemperate deposits {{Silurian-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Rochester Shale The Rochester Shale is a geologic formation exposed in New York and West Virginia. It preserves fossils dating back to the Silurian period. See also * List of fossiliferous stratigraphic units in West Virginia This article contains a list of fossil-bearing stratigraphic units in the state of West Virginia, U.S. Sites See also * Paleontology in West Virginia References * {{DEFAULTSORT:Fossiliferous stratigraphic units in West Virginia West V ... References * Silurian Maryland Silurian Ohio Silurian West Virginia Silurian geology of Virginia Silurian geology of New York (state) Silurian south paleopolar deposits {{Silurian-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]