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
Ovoidites	Ovoidites parvus	Iowa	Late Albian	Cenomanian
Schizocystia	Schizocystia rugosa	Iowa	Middle Cenomanian
Camarozonosporites	Camarozonosporites sp.1 Ravn & Witz.,1995 sp. nov.	Iowa	Middle Cenomanian	Late Cenomanian
Schizosporis	Schizosporis	Iowa	Early Cenomanian	Middle Cenomanian
Spermatites	Spermatites piperiformis	Iowa	Middle Cenomanian
Tytthodiscus	Tytthodiscus sp.1 Ravn & Witz.,1995 sp. nov.	Iowa	Middle Cenomanian
Odontochitina	Odontochitina costata	Iowa	Middle Cenomanian
Oligosphaeridium	Oligosphaeridium sp	Iowa	Middle Cenomanian
Cyclonephelium	Cyclonephelium sp	Iowa	Middle Cenomanian
Trichodinium	Trichodinium sp	Iowa	Middle Cenomanian
Cleistosphaeridium	Cleistosphaeridium sp	Iowa	Middle Cenomanian
Cingutriletes	Cingutriletes congruens	Iowa	Middle Cenomanian	Late Cenomanian
Retitriletes	Retitriletes expansus	Iowa	Middle Cenomanian
Retitriletes	Retitriletes reticulumsporites	Iowa	Middle Cenomanian	Late Cenomanian
Sestrosporites	Sestrosporites pseudoalveolatus	Iowa	Early Cenomanian	Middle Cenomanian
Taurocusporites	Taurocusporites segmentatus	Iowa	Early Cenomanian
Calamospora	Calamospora tener	Iowa	Middle Cenomanian