Haravex Posted September 5, 2017 Share Posted September 5, 2017 I was wondering if you good folks here can shed some light on how do you tell the difference between fully grown sub adult and juvenile. Now I know obvious there is a size difference but how would you tell for sure with the example of teeth say for example you had two of different sizes as there where different size teeth in the mouth of spinosaurus and crocodiles and other theropods. Thank you for all your help Matt Link to comment Share on other sites More sharing options...
JohnBrewer Posted September 5, 2017 Share Posted September 5, 2017 John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Haravex Posted September 6, 2017 Author Share Posted September 6, 2017 I think this might be an answer not many people know or have little idea about, glad i asked it. Link to comment Share on other sites More sharing options...
ynot Posted September 6, 2017 Share Posted September 6, 2017 There are some bones that will be fused together in an adult and not in a juvenile. (skull) 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...
doushantuo Posted September 9, 2017 Share Posted September 9, 2017 define adult: onset of gonadal maturity? I posted the classical treatise on the relationship between shape and size on this forum,and spoke of its importance. Don't think anybody noticed Edit:I take it,you are not talking about microfossils or plants,Btw. Call it a hunch . Link to comment Share on other sites More sharing options...
doushantuo Posted September 9, 2017 Share Posted September 9, 2017 trilobite example(see below) Link to comment Share on other sites More sharing options...
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