That's an awesome scan! In humans and most (if not all) other toothy vertebrates enamel forms first creating the stencil for dentine.
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Thanks! Yep, enamel organ forms b4 hard dentine & there's reciprocal induction of ameloblasts & odontoblasts, but in humans, secretory granules of ameloblasts lay down enamel proteins against mantle dentine that's already there (Ten Cate's Oral Histology, 2012).
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In a Kentucky cave scientists found the fossils ( including skulls and teeth ) of 330 million year old shark with possible links to modern Basking Sharks.
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I’d like to learn how to do this but as a mammal
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Čini se da učitavanje traje već neko vrijeme.
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