The fossils are estimated to be around 96 million years old and belong to the first Cretaceous mawsoniid coelacanth from North America. Reconstruction of Mawsonia sp. roaming in the brackish or fresh water costal environment of Texas during the Cenomanian age of the Late Cretaceous epoch. Image credit: Zubin Erik Dutta. Coelacanths are a group of large lobe-finned fish (sarcopterygians) closely related to tetrapods. They were thought to have been...