Roger Weller, geology instructor
last edited:
12/13/15 number of photos: 9
siliceous sponge
photos
glass sponge:
1
2
3
fossil sponge from Pennsylvania:
1
Chaetetes from Arizona:
1
2
sponge-like fossils
Receptaculies:
1
2
3
Photos are copyright free for non-commercial
educational uses.
Just credit photos to R.Weller/Cochise College
copyright 2015-R.Weller
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