This group includes the ancestors of mammals and lived alongside reptiles for millions of years. They eventually died out, except for the lineage that led to mammals.
Great Apes LCA candidate: Proconsul, an inhabitant of the Miocene forests in East Africa, stands as a landmark in the evolutionary journey toward self-awareness.
Genus Proconsul (Self-Awareness Settles) Read More »
Emerging in the lush forests of the Eocene, Miacis signifies a pivotal moment in the evolution of cognitive abilities among mammals. As a basal member of the Carnivora, this small, tree-dwelling creature exhibited behaviors and social dynamics suggesting the early stages of self-awareness.
Early Self-Awareness: Miacis Read More »
The rise of Eomaia scansoria, an early placental mammal, marks a definitive leap towards “Complex Sentience” in the evolutionary saga leading to humans. It’s also plausible that it possessed a foundational level of self-awareness, or what can be termed as Proto Self-awareness. A rudimentary sense of self.
Complex Sentience Settles: Eomaia scansoria Read More »
Last Gorilla-Chimp-Human ancestor: The last common ancestor of gorillas, chimpanzees, and humans likely lived about 8 to 10 million years ago.
Gorillas Branch Off: Genus Nakalipithecus Read More »
Orangutan ancestor: After the Great Apes LCA, orangutans evolved in Asia. The genus Sivapithecus represents early orangutans. An extinct species of the great apes, they lived in the Indian subcontinent from around 12 to about 8 million years ago.
Orangutans Branch Off: Genus Sivapithecus Read More »
After the split of great apes and humans about 16 mya, and the split of the chimpanzee branch from humans about 7 mya, the two modern pan species split: chimpanzees and bonobos. Around 1.5 to 2 million years ago, the evolutionary branches of ancient primates led to the distinct emergence of what we now recognize
Emergence of the Chimpanzee Family Read More »
An example of early live birth is the protomammal Kayentatherium, Jurassic period. The switch to live birth in mammals, including marsupials and placentals, evolved from a common ancestor.
Mammals: First Live Births Read More »
The amniotic egg evolved in the first amniotes, which evolved into today’s reptiles, birds, and mammals.
Amniotes Emerge: Amniotic Eggs Read More »
By about 280 million years ago, Dimetrodon was one of the best-known predators of the Early Permian. It stalked rivers and floodplains alongside caseid synapsids, large amphibians like Eryops, and a landscape of Calamites, Sigillaria, ferns, and early seed plants.
Early Complex Sentience Emerges: Dimetrodon Read More »
Morganucodon is an example of a plant eater likely similar to our direct-line ancestors around this time. It is not a direct human ancestor but is among the early mammaliaforms, close to the lineage leading to true mammals.
Morganucodon: An Early Mammalian Read More »
Plesiadapis, a proto-primate, is an example of a fruit-insect eater likely similar to our direct-line ancestors around this time.
Plesiadapis: First fruit-insect eaters. Read More »
The appendix is an example of a Phenotype Variation — a trait that varies among individuals. In fact, something like 1 in 100,000 people are born without an appendix.
Within mammals, only primates have binocular vision, grasping hands, and flat nails–instead of claws. Purgatorius might have had all three earning it the earliest known proto-primate label. It lived in Eastern Montana about 66 million years ago during the very last years of the Cretaceous period. It lived through the K-T extinction event and the extinction
Purgatorius — Earliest known proto-primate. Read More »
