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Conodont elements consist of mineralised teeth-like structures of varying morphology and complexity. The evolution of mineralized tissues has been puzzling for more than a century. It has been hypothesized that the first mechanism of chordate tissue mineralization began either in the oral skeleton of conodonts or the dermal skeleton of early ...
Thecodont dentition is a morphological arrangement in which the base of the tooth is completely enclosed in a deep socket of bone, as seen in crocodilians, dinosaurs and mammals, and opposed to acrodont and pleurodont dentition seen in squamate reptiles. [1] Notably, this appears to be the ancestral tooth condition in Amniota. [2]
The K-Town Historic District is a historic district listed on the National Register of Historic Places located in the North Lawndale community area in Chicago, Illinois.A mainly residential area, its borders are West Cullerton Street to the north, South Pulaski Road to the east, West Cermak Road to the south, and South Kostner Avenue to the west.
Anita Gloria Fishman Harris Epstein (July 10, 1937 – July 12, 2014) was an American geologist, paleontologist, and mapmaker. She devised the Conodont Alteration Index, a method of determining the heat exposure of buried rock, by analyzing conodont fossils.
Module:Location map/data/United States Chicago metropolitan area is a location map definition used to overlay markers and labels on an equirectangular projection map of Chicago metropolitan area. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Hindeodus was first described by Rexroad and Furnish in 1964 during the Illinois State Geological Survey's study of Mississippian stratigraphy. [11] The specimen was found in the Pella Formation of South-central Iowa which is known for excellent preservation of conodonts.
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Protoconodonts are an extinct group of Cambrian animals known from fossilized phosphatic tooth-like structures. They were originally described as an informal group of early conodonts , [ 1 ] [ 2 ] [ 3 ] though more recent studies consider them to be more closely related to chaetognaths (arrow worms).