Roger Weller, geology instructor
wellerr@cochise.edu
last edited: 1/30/18 number of photos: 1010
lectures
on crinoids
Crinoids- Marie Rosenkranz
crinoid heads
crinoid heads:
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16*
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crinoids from Morocco:
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15*
16*
17*
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crinoid heads from the Midwest:
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crinoid stems
crinoid stems:
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crinoid stems replaced by azurite:
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crinoid holdfasts
crinoid holdfasts:
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5*
crinoidal hash
crinoidal hash:
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polished crinoidal hash:
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crinoids-distinct species
Pentacrinus:
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free-floating crinoids
Saccocoma pectinata:
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crinoid diagram
crinoid diagram:
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cystoids
cystoids:
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Photos are copyright free for non-commercial educational uses.
Just credit photos to R.Weller/Cochise College.
copyright 2018-R.Weller