Tonto National Forest Devonian Project
Fossil of primitive fish Asterolepis in
foreground, with life reconstruction behind.
| Museum Researchers: |
Principal Investigator Adjunct Curator
Dr. Heidemarie Johnson |
| Location: |
Near Payson |
| Age: |
Middle to Upper Devonian, 380 million
years before present |
| Geological Unit: |
Martin Limestone |
| Discoveries Include: |
The ancient fishes, Asterolepis,
Bothriolepis, Arthrodira. |
| Comments: |
The beds containing the fish,
Asterolepis apparently represent a mass death in a drying pond
or ox bow lake, not far from the ancient ocean that covered much of
Arizona. |
Publications from Tonto National Forest Devonian Project
| 2001 |
In Search of Clues: Solving the Mystery
of a 375 million year old Mass-Kill.
Heidemarie G. Johnson. Mesa Southwest Museum Bulletin 8:1. |
| 2000 |
A New Antiarch (Class Placodermi) from
Arizona.
Heidemarie G. Johnson (abstract). Mesa Southwest Museum Bulletin 7:
1. |
| 1995 |
Devonian Fossil Fish from Central
Arizona.
Heidemarie G. Johnson. Fossils of Arizona Symposium Proceedings
Volume 3:1-6. |