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and three to six toothed
In 1974 one of these was named by James Henry Madsen Jr
It contains the original shell (from the unprepared side) that adhered to the matrix
This extraordinary example is interpreted to be an undescribed Birthwort leaf possible from the family Aristolochiaceae
Ceratosaurus was characterized by deep jaws that supported proportionally very long
Eocene Chadron Megacerops VF-WR-19-001 Fossil Insect and three to six toothedMegacerops sp. Chadron Formation White River Group Late Eocene Niobrara County, Wyoming This is a lower jaw section of the Late Eocene "Titanothere" Megacerops. The jaw section contains a single M3 molar. The preservation is excellent. The jaw section is 12 inches long and 13 inches tall. The molar is 4 inches long. The tooth preservation is exceptional. The jaw section displays the articular process, the coronoid process, and the mandibular foramen.