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alberghi a HelsinkiTHE NACO FORMATION: THE OCEAN FLOOR 300 MILLION YEARS AGO
Exhibit Section 2.
Featured here are more fossil discoveries made by the Santa Monica Museum of Natural History on the Field Survey Expedition of June, 2000.
: : : 3 Specimens of Acanthospirifer occiduus Naco Ftn., Gila County, Arizona In the first specimen the "hinge" or joint between the valves, (shells) can be seen. In the second specimen, a small piece of a Branching Bryozoan can be seen laying on top. Clam 2 Primitive Pectens Coral with Brachiopod The Santa Monica Museum of Natural History would like to thank the following people for their assistance in the preparation of this and other exhibits. (See also: CREDITS Page.)
Upper Pennsylvanian, about 295-300 million years old.
hotel center Ikskile Specimen on bottom is about 1 inch across.
Wilkingia terminale
Naco Ftn., Gila County, Arizona
Upper Pennsylvanian, about 295 million years old.
Specimen is about 2.2 inches high.
Aviculopecten sp.
Naco Ftn., Gila County, Arizona
Upper Pennsylvanian, about 295 million years old.
Specimen on right is about 1.1 inches wide.
Paraconularia kohli
Paris hotel rooms Composita subtilita, (Brachiopod, upper left)
Naco ftn., Winkleman, Arizona
Pennsylvanian, about 295 million years old.
Coral is about 33mm across.
CREDITS
Other sources for this exhibit include:
Middle Pennsylvanian Fauna from the Naco Formation Near Kohl Ranch, Central Arizona, by Douglas C. Brew and Stanley S. Beus; from The Journal of Paleontology; V. 50, no. 5; The Paleontolgy Society; pp 888-906
A PICTORIAL GUIDE TO FOSSILS, Gerard Case; Van Nostrand Reinhold, 1982; pp. 50
THE FOSSIL BOOK, C.L. Fenton, M.A. Fenton; Doubleday, 1989; pp. 154
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