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Ozan, USA

Formation	Ozan
Age:	83.5 - 70.6 Ma Late/Upper Cretaceous
Interval	Late Campanian
Lithology	marl, claystone/sandstone
Number of Collections	4
Number of Occurrences	23

Recorded Sample Locations

Location	Region	Stratigraphic Name
Trachyscaphites spiniger ammonite fauna	Fannin County, Texas, USA	Ozan
White Cliffs Station	Sevier County, Arkansas, USA	Ozan
West of Arkansas State Line	McCurtain County, Oklahoma, USA	Ozan
Middle Fork of Ozan Creek	Hempstead County, Arkansas, USA	Ozan

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Brownstown	85.8 - 66.0 Ma Late/Upper Cretaceous	claystone/marl, sandstone	5

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Alderina sp. genus	6	Animalia : Bryozoa : Gymnolaemata : Cheilostomatida : Calloporidae : *Alderina*	83.5 - 70.6 Ma Late/Upper Cretaceous
Ramphonotus sp. genus	6	Animalia : Bryozoa : Gymnolaemata : Cheilostomatida : Calloporidae : *Ramphonotus*	83.5 - 70.6 Ma Late/Upper Cretaceous
Pyripora sp. genus	6	Animalia : Bryozoa : Gymnolaemata : Cheilostomatida : Electridae : *Pyripora*	83.5 - 70.6 Ma Late/Upper Cretaceous
Stictostega durhami species	7	Animalia : Bryozoa : Gymnolaemata : Cheilostomatida : Hippothoidae : Stictostega : *Stictostega durhami*	83.5 - 70.6 Ma Late/Upper Cretaceous
Diacanthopora sp. genus	6	Animalia : Bryozoa : Gymnolaemata : Cheilostomatida : Pelmatoporidae : *Diacanthopora*	83.5 - 70.6 Ma Late/Upper Cretaceous
Aechmella sp. genus	6	Animalia : Bryozoa : Gymnolaemata : Cheilostomatida : Microporidae : *Aechmella*	83.5 - 70.6 Ma Late/Upper Cretaceous
Escharoides sp. genus	6	Animalia : Bryozoa : Gymnolaemata : Cheilostomatida : Exochellidae : *Escharoides*	83.5 - 70.6 Ma Late/Upper Cretaceous
Hesperornis sp. genus	6	Animalia : Chordata : Aves : Hesperornithiformes : Hesperornithidae : *Hesperornis*	83.5 - 70.6 Ma Late/Upper Cretaceous
Exogyra sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Gryphaeidae : *Exogyra*	83.5 - 70.6 Ma Late/Upper Cretaceous
Baculites aquilaensis species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : Baculites : *Baculites aquilaensis*	83.5 - 70.6 Ma Late/Upper Cretaceous
Menabites (Delawarella) sp. subgenus	6.3	Animalia : Mollusca : Cephalopoda : Ammonitida : Collignoniceratidae : Menabites : *Menabites (Delawarella)*	83.5 - 70.6 Ma Late/Upper Cretaceous
Menabites (Delawarella) danei species	7	Animalia : Mollusca : Cephalopoda : Ammonitida : Collignoniceratidae : Menabites : *Menabites (Delawarella) danei*	83.5 - 70.6 Ma Late/Upper Cretaceous
Menabites (Delawarella) delawarensis species	7	Animalia : Mollusca : Cephalopoda : Ammonitida : Collignoniceratidae : Menabites : *Menabites (Delawarella) delawarensis*	83.5 - 70.6 Ma Late/Upper Cretaceous
Menabites (Delawarella) vanuxemi species	7	Animalia : Mollusca : Cephalopoda : Ammonitida : Collignoniceratidae : Menabites : *Menabites (Delawarella) vanuxemi*	83.5 - 70.6 Ma Late/Upper Cretaceous
Glyptoxoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : *Glyptoxoceras*	83.5 - 70.6 Ma Late/Upper Cretaceous
Eupachydiscus grossouvrei species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Pachydiscidae : Eupachydiscus : *Eupachydiscus grossouvrei*	83.5 - 70.6 Ma Late/Upper Cretaceous
Pachydiscus (Pachydiscus) paulsoni species	7	Animalia : Mollusca : Cephalopoda : Ammonitida : Pachydiscidae : Pachydiscus : *Pachydiscus (Pachydiscus) paulsoni*	83.5 - 70.6 Ma Late/Upper Cretaceous
Placenticeras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonitida : Placenticeratidae : *Placenticeras*	83.5 - 70.6 Ma Late/Upper Cretaceous
Scaphites hippocrepis species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Scaphites : *Scaphites hippocrepis*	83.5 - 70.6 Ma Late/Upper Cretaceous
Trachyscaphites densicostatus species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Trachyscaphites : *Trachyscaphites densicostatus*	83.5 - 70.6 Ma Late/Upper Cretaceous
Trachyscaphites spiniger species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Trachyscaphites : *Trachyscaphites spiniger*	83.5 - 70.6 Ma Late/Upper Cretaceous

References

Shaw N. G. (1967) Cheilostomata from Gulfian (Upper Cretaceous) rocks of southwestern Arkansas, Journal of Paleontology 41 6, 1393-1432

Cobban W. A., Kennedy W. J. (1992) Campanian Trachyscaphites spiniger ammonite fauna in north-east Texas, Palaeontology 35 1, 63-93

Bell A., Irwin K. J., et al (2015) Hesperornithiform birds from the Late Cretaceous (Campanian) of Arkansas, USA, Transactions of the Kansas Academy of Science 118 3-4, 219-229

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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