Sylvania is a city in Lucas County, Ohio, United States. The population was 19,011 at the 2020 census. Sylvania is a suburb of Toledo, and encompassed by Sylvania Township. Its northern border is the southern border of the state of Michigan.
State Route 184 (SR 184) is a 10.14-mile (16.32 km) long east–west state highway in northwestern Ohio, a U.S. state. The western terminus of SR 184 is at the U.S. Route 23 (US 23) freeway in Sylvania, at a five-ramp parclo AB-3 interchange that also serves as the southern terminus of US 223, as well as the northern terminus of SR 51. The eastern terminus of SR 184 is at a diamond interchange with Interstate 75 in Toledo.
Sylvania Township is one of the eleven townships of Lucas County, Ohio, United States. As of 2020, the total population was 50,679, making it the second most populous municipality of Lucas County, Northwest Ohio, and the 419 / 567 area codes.
The Detroit River Group is a geologic group in Michigan and Ohio. It preserves fossils dating back to the Devonian period.
The Waverly Group is a geologic group in Michigan and Ohio. It preserves fossils dating back to the Carboniferous period.
The Bass Islands Formation is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.
The Richmond Formation is a geologic formation in Michigan and Ohio. It preserves fossils dating back to the Ordovician period.
The Trenton Formation is a geologic formation in Canada and Michigan, Ohio, New York State and Indiana in the United States. It preserves fossils dating back to the Ordovician period.
The Liberty Formation is a geologic formation in Ohio and Indiana. It preserves fossils dating back to the Ordovician period.
The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.
The Dundee Limestone is a geologic formation in Michigan, Ohio and Ontario. It preserves fossils dating back to the Devonian period.
The Maxville Limestone is a geologic formation in Ohio. It preserves fossils dating back to the Carboniferous period.
The Franconia Formation is a geologic formation in the upper mid-western United States, with outcroppings found in Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, and Wisconsin. It preserves fossils dating back to the Cambrian period. It was named the Franconia Formation due to the first published documentation of exposures in vicinity of Franconia, Minnesota in the 1897 Ph.D. dissertation by Charles P. Berkley at the University of Minnesota titled Geology of the St. Croix Dalles. The Franconian stratigraphic stage was named after this formation.
The Cabot Head Shale is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.
The St. Ignace Dolomite is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.
The Put-in-Bay Dolomite is a geologic formation in Michigan and Ohio. It preserves fossils dating back to the Silurian period. The type locality is South Bass Island in western Lake Erie.
The Raisin River Dolomite is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.
The Garden Island Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Bois Blanc Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
