peter_robertson Posted November 8, 2020 Share Posted November 8, 2020 Hello! I am not a serious fossil collector, but I am always on the lookout for fossils when I am around exposed rock. I was hoping the members of this site could tell me if they thought this rock was a fossilized egg. I was struck by its shape and its texture. I photographed it in the Grand Canyon on the trail between Phantom Ranch and Cottonwood Campground. It measures about 5 inches squared. Thank you for your thoughts! Link to comment Share on other sites More sharing options...
jpc Posted November 8, 2020 Share Posted November 8, 2020 I don't know where Cottonwood Campground is but f you are as far down as Phantom Ranch, the rocks are too old to have fossil eggs in them. But concretions exist is rocks of all ages. Link to comment Share on other sites More sharing options...
Rockwood Posted November 8, 2020 Share Posted November 8, 2020 It is entirely reasonable to question the possibility though. The look is just a little off. Link to comment Share on other sites More sharing options...
Paleostoric Posted November 8, 2020 Share Posted November 8, 2020 Looks more geologic in origin to me. I could see how the appearance looks like an egg, but usually fossil eggs will have more apparent features, such as egg shells or ornamentation, which I do not see here. Link to comment Share on other sites More sharing options...
Ludwigia Posted November 8, 2020 Share Posted November 8, 2020 I'll go along with jpc. I checked out the geology of the path you took and it looks like this sandstone is too old (Paleozoic/Cambrian) to have contained an amniotic egg, the first of which appeared much later in the geological record during the Carboniferous. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
daves64 Posted November 8, 2020 Share Posted November 8, 2020 Looks like it could be a septarian nodule. 1 Accomplishing the impossible means only that the boss will add it to your regular duties. Link to comment Share on other sites More sharing options...
Rockwood Posted November 8, 2020 Share Posted November 8, 2020 Or a wan'a be at least. Link to comment Share on other sites More sharing options...
peter_robertson Posted November 8, 2020 Author Share Posted November 8, 2020 Thanks everyone for having a look! Link to comment Share on other sites More sharing options...
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