EurekAlert!1 年
Dorsal spine of Orthacanthus adamas (IMAGE)
Dorsal spine of Orthacanthus adamas from the Upper Freeport Coal (Carboniferous) of Linton, Ohio. The spine is about 71 mm long. Disclaimer: AAAS and EurekAlert! are not responsible for the ...
EurekAlert!1 年
Tooth of the xenacanthiform shark Orthacanthus lintonensis (IMAGE)
Tooth of the xenacanthiform shark Orthacanthus lintonensis Babcock, 2024, from the Upper Freeport Coal (Carboniferous) of Linton, Ohio. The tooth is about 13 mm long. Disclaimer: AAAS and EurekAlert!