Specimen 70892 – myFOSSIL

Evan Walsh posted a new specimen. 7 months, 3 weeks ago

7 months, 3 weeks ago

7 months, 3 weeks ago

Evan Walsh has contributed specimen mFeM 70892 to myFOSSIL!
- Bill Heim replied 7 months, 2 weeks ago
  
  There is a debate about the validity of Nanotyrannus which probably won’t be fully determined until the privately owned fighting dinosaurs are described. Currently to tell the difference between a juvenile Tyrannosaurus and Nanotyrannus tooth is to examine the base of the tooth. Nanotyrannus has a more rectangular shape to the base and the…[Read more]
- Evan Walsh replied 7 months, 2 weeks ago
  
  The oval vs. D-shaped cross section of Tyrannosaurus vs. Nanotyrannus mainly applies to posterior dentary or premaxillary teeth. This tooth matches the morphology of what is called ‘Aublysodon,’ a dubious catch-all “genus” which was based off the teeth like these. However it is now understood that ‘Aubylsodon’ teeth do not in fact represent any…[Read more]

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How do I go figuring out the age and name of the rock I was collecting in?
- A starting place would be to ask the group or organization that you went collecting with for information on the outcrop you visited. There are also several apps for your mobile phone or other devices that can help you better estimate where you are in geologic time. Mancos costs $2.99 through the Apple Store and provides you with data on your location including geologic age, the rock formation, description of the rock, what units are above and below, and what sort of fossils you should expect to find in the rock. Rockd is free and available in the Apple Store and on Google Play. Similarly, Rockd tells you where are with latitude and longitude data, elevation, what age, what the rock type is, what rock unit you are on, and the functionality continues. You are able to check in at outcrops, use a compass, examine ancient continent arrangements, and learn about different rock forming minerals within the app.
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What is the difference between a group, formation, and member?
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- Click here for more information from the British Geological Survey.

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I’m concerned my specimen is not research grade material, does that matter?
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