Tertiary Period

Cretalamna

Cretalamna, meaning “chalk shark”, was a 10 foot long shark which lived from the middle Cretaceous Period to the Eocene Epoch of the Paleogene Period 105-46 million years ago. Cretalamna was one of the first so-called “modern” sharks to appear…. Read More ›

Synechodus

Synechodus was a genus of prehistoric saltwater shark which lived from the early Permian Period until the late Eocene Epoch of the Paleogene Period, 290 to 37 million years ago (Ivanov 2005, pages 127-138). Fossils of this animal reached around… Read More ›