Graptolites: Didymograptus artus 2 (PRI 76792)3D Model
Fossil specimens of the graptolite Didymograptus artus from the Ordovician Phi Kappa Formation of Idaho (PRI 76792). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Longest dimension of rock is approximately 4.5 cm. Model by Emily Hauf.