Rocky Stoner Posted August 29, 2017 Share Posted August 29, 2017 Hi folks Had a chance to crack a few chunks of shale today and found a new trilobite cephalon that I haven't seen here before. The extended "ear" was in perfect condition initially but was very fragile. It got fractured a bit so I halted the prep to get a pic while it was relatively intact. The eye looks a lot like the eldredgeops. My favorite reference, "Views of the Mahantango" lists 4 species but the list does not include this one (best I can tell). I found a few other familiar specimens and attached pics of them as well. All from the same spot as the dipleura found earlier. Thanks for looking. Regards Link to comment Share on other sites More sharing options...
Kane Posted August 29, 2017 Share Posted August 29, 2017 Hm, neat. This looks similar to a Greenops cephalon. Could you take another picture aiming at the lenses of its eye? It is listed on that site, but perhaps with a different tag: http://viewsofthemahantango.blogspot.ca/2010/06/greenops.html ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Rocky Stoner Posted August 29, 2017 Author Share Posted August 29, 2017 Hi Kane. Yes yes, I hadn't looked closely enough at the greenops. Not sure why, but I assumed it was something other due to already finding greenops pygidia. I'll get another pic shortly. And a pic of the eldredgeops prepped out a bit, but a little squashed. Thanks Kane. Link to comment Share on other sites More sharing options...
Rocky Stoner Posted August 29, 2017 Author Share Posted August 29, 2017 .... few more pics. The basic shape of the eye looked similar to me at first. Appeared to be a little damaged and not showing the many individual lenses as in the eldredgeops. Pretty, none the less. Thanks again. Link to comment Share on other sites More sharing options...
Kane Posted August 29, 2017 Share Posted August 29, 2017 Any time. And I think the last picture in your first post is a Dipleura dekayi cephalon piece (you probably already knew that and were posting it as an ensemble of specimens collected. My apologies - I must have missed or forgotten one of your previous posts!). ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Miocene_Mason Posted August 30, 2017 Share Posted August 30, 2017 There's the head of the greenops, now all you need is a thorax! It's cool that the other eldregeops head right next to it. Nice finds! “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
GerryK Posted August 31, 2017 Share Posted August 31, 2017 The cephalon is not a Greenops but a Bellacartwrightia Link to comment Share on other sites More sharing options...
Kane Posted August 31, 2017 Share Posted August 31, 2017 Just now, GerryK said: The cephalon is not a Greenops but a Bellacartwrightia @Rocky Stoner - This is even more exciting than a Greenops. Incredible find! ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Rocky Stoner Posted August 31, 2017 Author Share Posted August 31, 2017 13 minutes ago, GerryK said: The cephalon is not a Greenops but a Bellacartwrightia Hi GerryK, What features are present that distinguishes one from the other ? THANKS ! 12 minutes ago, Kane said: @Rocky Stoner - This is even more exciting than a Greenops. Incredible find! Link to comment Share on other sites More sharing options...
ynot Posted August 31, 2017 Share Posted August 31, 2017 Nice find Rocky! Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
GerryK Posted August 31, 2017 Share Posted August 31, 2017 1) spine base on the occipital ring; Greenops does not have a spine 2) S2 furrow merges with axial furrow; in Greenops the S2 furrow does not merge with axial furrow 3) Moderate to broad cephalic border; Greenops has a narrow cephalic border Link to comment Share on other sites More sharing options...
Rocky Stoner Posted August 31, 2017 Author Share Posted August 31, 2017 12 minutes ago, GerryK said: 1) spine base on the occipital ring; Greenops does not have a spine 2) S2 furrow merges with axial furrow; in Greenops the S2 furrow does not merge with axial furrow 3) Moderate to broad cephalic border; Greenops has a narrow cephalic border Easy to see the differences now. Excellent description, THANKS MUCH ! Always exciting to find something new different. Link to comment Share on other sites More sharing options...
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