Researchers have long believed that all four-limbed animals or tetrapods, a group that includes amphibians, reptiles, and mammals, evolved from an ancient group of fish known as Elpistostege watsoni, which lived between 416 million and 358 million years ago, during the Devonian Period.
Over the years, partial remains of the creatures, which possessed characteristics of both lobe-finned fishes and tetrapods, has shed light on some of the anatomical change the creatures underwent, such as breathing, hearing, and feeding. However, the lack of a complete pectoral fin fossil had made it impossible to determine the evolution of one of the most important features for the transition — hands!
Check This Out!
Check This Out
This blog is for elementary age students. The posted devotions, news articles, videos and other materials are gleaned from websites by my student advisers. They believe this material would be of interest to other students of their same ages.
Student Advisers (grade):
N. Shackleford (6 Technician),
J. Crawford (6) "Tech and Science"
E. Unthank (5) "DOGO News"
J. Wood (4) "TKSST"