Specimen 50069 – myFOSSIL

Jack Kallmeyer posted a new specimen. 7 years, 2 months ago

7 years, 2 months ago

7 years, 2 months ago

Jack Kallmeyer has contributed specimen mFeM 50069 to myFOSSIL!
- Jennifer Bauer replied 4 years, 2 months ago
  
  Hi @jkallmeyer – So this is a specimen that is commonly mistaken for a crinoid? Is that what you mean by pseudofossil? Thanks, Jen
  - Jack Kallmeyer replied 4 years, 2 months ago
    
    Perhaps pseudofossil isn’t a good choice. It is a pseudo trace fossil. Since trace fossils are those made by an animal doing something and this trace is made by water currents acting on a piece of crinoid stem I don’t think it can be called a trace fossil. Is that correct? This is not mistaken for a crinoid but might be mistaken for a real…[Read more]
    - Jennifer Bauer replied 4 years, 2 months ago
      
      Okay, that makes more sense to me! You are correct, a trace fossil indicates animal behavior and this is nature acting on the (dead?) animal parts.

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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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