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Showing results for tags 'development'.
Biotalker posted a topic in General Fossil DiscussionSomething caught my eye at the cheap table of trilobites at a Moroccan vender at a past fossil show. There were several Scabriscutellum of mediocre quality but I bought two. You can see them here. I am pretty certain these fossils are legit. One seems to have to have a clear cleft in the pygidium. There is even a small overlap of one pygidial "lobe" over the other. This is the first time I have seen such a "dramatic" mutation. I would guess that it is far more likely to be a developmental issue rather then a genetic mutation. The cleft trilobite obviously survived to its current size just fine
Parent_1997-Geobios.pdf Ontogeny and Sexual dimorphism of Eurycephalites gottschei(Tornquist)(Ammonoidea) of the Andean Lower Callovian(Argentine-Chile) Geobios 30-3,30-6-1997 recommended? You bet!! Avoid if allergic to quantitative analytic data treatment
When three guys with that kind of reputation in echinodermology get together to write a paper,you just KNOW it's going to be good. Highly recommended,particularly if you love your Loven,Mortensen,Raff,etc. Extremely well illustrated,IMHO Saucepourtpical 04 me.pdf