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Zoology/This big ole tooth

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John wrote at 2013-03-10 21:18:03
There are two features which allow killer whale and sperm whale teeth to be identified. The root canal, the hole along the inside the tooth, is very narrow in a killer whale but is very wide and gets progressively narrower, like a cone, in a sperm whale. Secondly the sperm whale tooth is completely made of dentine (ivory) where as the tip of the killer whale tooth is covered by very hard enamel, like human teeth. I think what is shown here is a sperm whale tooth.


Zoology

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Chris

Expertise

I can answer a wide variety of questions about general evolution or ecology. I can identify wild reptiles and amphibians based on moderate to high quality descriptions or photos, and I can provide information about species' habitats, behaviors, ranges, etc.

Experience

I am an academic, and have published on paleontology, evolution and ecology; and have professionally studied nearly all major vertebrate groups; sharks and other fish, amphibians, reptiles, birds and mammals. I have conducted professional field research on reptiles and amphibians, as well as many other animals. "Herping" and nature photography have always been some of my favorite hobbies.

Education/Credentials
B.S. General Biology, William Paterson University. Currently working towards a Ph.D. at University of North Texas.

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