Fossil Living Chamber

Architeuthoceras

Architeuthis
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A few other small fossils found this weekend. A small Edriasteroid and a crinoid with the calyx. All Early Ordovician, Floian Stage, Zone I (Ibexian Series, Blackhillsian Stage in NA usage)
 

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Architeuthoceras

Architeuthis
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They all were found in the informal Calathium Calcisiltite Member of the Fillmore Formation, in the Ibex region of western Utah. Of course it is a secret spot and if I told you exactly where it was I would have to make a call and have something done about it :wink:

By the way, they were not collected, just photographed in the field and marked with a GPS.
 

Phil

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Congratulations Kevin, stunning finds. Might be a little far for me to go and have a look in your 'secret location' though! Any idea as to the species?
 

Architeuthoceras

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Phil;92998 said:
Any idea as to the species?

The first two I would just have to say Protocyclocerid, could be either Protocycloceras or Catoraphiceras but I cant see the sutures, Catoraphiceras would have a ventral saddle.
The big one is probably some form of Ellesmerocerid.
 

Architeuthoceras

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An ammonoid body chamber found last weekend. An Arctocerid probably churkites. Like the others, the body chamber filled with mud that partially lithified, protecting it from the crushing weight of the sediment. Unlike most of the others, the phragmocone left an impression in the soft muddy bottom which also partially lithified, or at least got hard enough to protect it.

Also a photo of Jim Jenks, a fellow triassic ammonoid enthusiast.

and yours truly:old:
 

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