Hi, @hope-scheff – You can add in some of the higher order classification such as Kingdom Animalia > Phylum Chondrichthyes. I’m seeing some conflicting ordinal assignments Odontaspidida v. Lamniformes so I’ll let @fauve-wilson chime in on that.

You can use Macrostrat to figure out the geochronology:…[Read more]

Picture is too unclear and small to tell exactly what genera it is. It doesn’t appear to be a thresher shark. A better, closer image would be helpful. Also use a background that contrasts with the tooth. Grey on grey makes it difficult to produce a clear image.

Hi, @hope-scheff – you can update your classifcation to include Kingdom Animalia > Class Condrichthyes > Order Carcharhiniformes. Are you interested in getting more specific? I can tag in some of our shark experts.
Here is some information on the Hawthorn to help narrow in your time periods:…[Read more]

Hi, @hope-scheff – Do you think Negaprion is the genus of this fossil? It would be better suited in the genus spot rather than the common name spot.

You can add in the geochronology by using this map to find the locality you were at to get the information: https://macrostrat.org/map/#/z=10.7/x=-82.3217/y=29.7107/bedrock/lines/