Ravn,R.L.

Author:
Ravn,R.L.;Witzke,B.J.

Year:
1995

Title:
The palynostratigraphy of the Dakota Formation, (?Late Albian-Cenomanian) in its type area, northwestern Iowa and northeastern Nebraska, USA.

Reference:

Ravn,R.L. et al. (1995) The palynostratigraphy of the Dakota Formation, (?Late Albian-Cenomanian) in its type area, northwestern Iowa and northeastern Nebraska, USA. Pal¤eontographica Abteilung B Vol. 234 P. 93- 171

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Genus	Species	Country(Region)	From	To
Odontochitina	Odontochitina costata	Iowa	Middle Cenomanian
Oligosphaeridium	Oligosphaeridium sp	Iowa	Middle Cenomanian
Osmunda	Osmunda densiornamentata	Nd	Nd
Osmunda	Osmunda echinata	Nd	Nd
Osmundacidites	Osmundacidites wellmanii	Iowa	Early Cenomanian	Middle Cenomanian
Ovoidites	Ovoidites australiensis sp. nov.	Iowa	Middle Cenomanian	Late Cenomanian
Ovoidites	Ovoidites cachuetensis	Argentina(Mendoza)	Middle Triassic
Ovoidites	Ovoidites majusculus	Iowa	Early Cenomanian	Middle Cenomanian
Ovoidites	Ovoidites majusculus	Oklahoma	Cenomanian
Ovoidites	Ovoidites parvus	Iowa	Late Albian	Cenomanian
Palmaepollenites	Palmaepollenites minusculus	Oklahoma	Cenomanian
Parvisaccites	Parvisaccites radiatus	Iowa	Late Albian	Middle Cenomanian
Peromonolites	Peromonolites allenensis	Iowa	Cenomanian
Peromonolites	Peromonolites reticulatus	Nd	Nd
Perotrilites	Perotrilites bursatus	Iowa	Middle Cenomanian	Late Cenomanian
Perotrilites	Perotrilites convolutus	Nd	Nd
Perotrilites	Perotrilites sp.2 Jame.,1987 sp. nov.	Nd	Nd