Synapsid

The evolution in mammals have passed through many stages since their synapsid ancestors first appearance in Carnivorous period between 320 to 315 years ago All mammals are related deeply in their bones and today’s mammals are one of the mammal lineages that survived. Scientific evidence suggests that Otters have been on Earth from the past 23 million years and present day’s Otter evolved about 7 millions years ago. Otters have gone through many adaptations and scientists believe that Otters…

shifting weather and temperature patterns of the Permian. They were replaced as the dominant land animals by warm-blooded (a trait that put them at a disadvantage during the Permian Extinction, as they needed to eat more to maintain their body heat) synapsids, more specifically therapsids, in the Middle and Late Permian. Aquatic animals included early fish, bacteria, archaea, and invertebrates, such as trilobites, foraminifera, and ammonites (primitive nautiluses). Insects consisted mostly of…

The Evolving Planet exhibit at the Field Museum of Natural History is a work of art that thoroughly explains the story of life through evolution. The exhibit begins by informing us about organic compounds coming to be on earth and how all living organisms require organic compounds. It moves on to explain single cell organisms developing from organic compounds and then becoming self-sufficient using energy from the sun. These single-cell organisms grew into more complex beings with genetic…