Scaphites sp. (semicostatus?) impression
North Texas. Atco formation. Upper Coniacian.
Found at a site further to to south than my normal Atco sites. It is larger and just generally more robust than any of my other Scaphites semicostatus specimens.
You can see some of the tubercles still stuck in the impression.
Compare with the S. semicostatus holotype here: http://www.thefossilforum.com/index.php?/gallery/image/57475-scaphites-semicostatus-holotype/
Photo Information
- Taken with Apple iPhone 7 Plus
- Focal Length 4 mm
- Exposure Time 1/120
- f Aperture f/1.8
- ISO Speed 25