JulianoLPD Posted January 23, 2019 Share Posted January 23, 2019 Hi there everyone. I'm pretty new to this hobby and, as many of you, I'm interested in all kinds of old stuff. My question is probably very lame, but I found these specimens for sale in an online auction website and it doesn't seem genuine to me. Actually, I got the feeling it was "painted" or something like that. So, I was wondering if anyone could help me with this. Also, any tips on how to recognize real or false items via pictures would be extremely welcome. Thank you very much in advance, (Sorry for my bad English) Juliano Link to comment Share on other sites More sharing options...
Kane Posted January 23, 2019 Share Posted January 23, 2019 These are real, and fairly common as moults. This species (Coronocephalus gaoluoensis) does come out with this mineralization colour. For comparison, one of mine: 3 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Herb Posted January 23, 2019 Share Posted January 23, 2019 they look real to me "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 23, 2019 Share Posted January 23, 2019 Real. Hello, and a very warm welcome to TFF from Morocco! Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
JulianoLPD Posted January 23, 2019 Author Share Posted January 23, 2019 Thank you all guys. In a related topic, is it commom to have just the pigidium fossilized? Also, can you give an ID based just on the pigidium? Link to comment Share on other sites More sharing options...
Kane Posted January 23, 2019 Share Posted January 23, 2019 Just now, JulianoLPD said: Thank you all guys. In a related topic, is it commom to have just the pigidium fossilized? Also, can you give an ID based just on the pigidium? Yes, as trilobites moulted frequently throughout their lives as they grew. As for ID, I provided it above in my first reply. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
JulianoLPD Posted January 23, 2019 Author Share Posted January 23, 2019 Thanks Kane. That's why I asked about the ID. So you can give an ID based on just the pigidium. What's the key morphoogical characters one need to look for ID them, since there are hundreds of species. Again, forgive me if my questions are too lame... Link to comment Share on other sites More sharing options...
piranha Posted January 23, 2019 Share Posted January 23, 2019 34 minutes ago, JulianoLPD said: ...So you can give an ID based on just the pigidium. What's the key morphoogical characters one need to look for ID them, since there are hundreds of species... For the pygidium 40+ axial rings and ~15-16 pygidial ribs are the expected range for Coronocephalus gaoluoensis. Chen, G., Han, N., Luo, R. 2012 Restudy of Coronocephalus gaoluoensis WU, 1979. Acta Palaeontologica Sinica, 50(3):284-303 4 Link to comment Share on other sites More sharing options...
Kane Posted January 23, 2019 Share Posted January 23, 2019 Over 20,000 species, actually. As you get to know the different taxonomic orders of trilobites, it gets easier to distinguish them even from fragments. Shape, number of ribs, whether they are micro-, sub-, macropygous — all help in narrowing it down. As does geologic age and location. I also know this particular listing, which helps even more. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
JulianoLPD Posted January 23, 2019 Author Share Posted January 23, 2019 Quote 8 hours ago, Kane said: I also know this particular listing, which helps even more. Yeah, I believe that helps Thank you guys! Learned a lot in those few threads already!! Link to comment Share on other sites More sharing options...
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