Dracopristis
Videos
Dracopristis is an extinct genus of ctenacanth that lived during the Carboniferous period in North America, around 307 million years ago. The species was discovered in the Kinney Brick Quarry in New M
An exposure of limestone belonging to the Atrasado Formation, photographed along a roadcut near Jemez Springs, New Mexico
Large, ornamented dorsal spines of ctenacanths, such as Ctenacanthus (pictured) and Dracopristis, are a defining feature of the group
The articulated remains of a large symmoriiform similar to Cobelodus, discovered at the Kinney Brick Quarry
Doliodus
Videos
Doliodus is an extinct genus of cartilaginous fish known from the Early Devonian period of what is now New Brunswick, Canada. It includes a single named species, referred to either as D. problematicus
Life reconstruction of Doliodus, based on NBMG 10127 and showcasing fin spines