Hominids, the Great Apes, narrows to gorillas, orangutans, chimpanzees, and humans, along with their direct ancestors. Traits: large size, no tail, and more complex brains and behaviors.
Laughter is closely related to emotional intelligence: The roots of laughter can be traced back to our common ancestors with other great apes, living around 10 to 15 million years ago. These early primates likely exhibited rudimentary forms of laughter as a social signal during play, much like modern-day chimpanzees, bonobos, and gorillas. This “animal […]
Since before the orangutan branched about 12 million years ago, all the great ape species had a vocabulary—signals, gestures, grunts, and screams—in various contexts, potentially ranging into the thousands. These early apes communicated with not only a wide variety of sounds and gestures but also different levels or gradations of these signals. For instance, one
Animal Vocabulary: Thousands of Words (The Great Apes) Read More »
Likely between 25 and 30 million years ago, the evolution of the apes brought about further refinement of the opposable thumb. This period saw the divergence of the lineages that would lead to modern “lesser” apes like gibbons as well as later “great” apes, including orangutans, gorillas, and chimpanzees. The ape thumb evolved to become
Arboreal to Terrestrial: Beginning approximately 9 million years ago, our ancestors began an evolutionary change from forests to woodlands to savannahs. This gradual transition from primarily arboreal (tree-dwelling) lifestyles to increasingly terrestrial (ground-based) behaviors was very gradual with traits specific for walking around carrying things gradually accumulating. This evolutionary journey spanned roughly 7 million years,
Transition from Trees to Savannah Begins Read More »
While speculative, it is reasonable to position the occassional use of proto-medicine as emerging in the great apes sometime around 18 million years ago. Modern orangutans, apes, and chimpanzees treat wounds, digestive issues, and even use insect repellant. The Great Apes LCA lived around 18 million years ago, so using the Occam Approach, this implies
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Great Apes LCA candidate: Kenyapithecus is an extinct genus of great ape that lived in Kenya around 14-16 million years ago. It is considered a potential candidate for the last common ancestor of all great apes, including humans, chimpanzees, gorillas, and orangutans. Kenyapithecus had a mix of primitive and advanced features, with a brain size
Genus Kenyapithecus: EI Emerges Read More »
660,000 Generations Ago The Last Common Ancestor (LCA) of the Great Apes, a.k.a. the Hominidae family, marks a pivotal point in our evolutionary history, encompassing the origins of orangutans, gorillas, chimpanzees, and humans. This ancestor species, likely existing between 15 to 19 million years ago, represents the shared lineage from which all modern great apes
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CHLCA candidate: This genus includes Ardipithecus ramidus (like “Ardi”) and possibly earlier species like Ardipithecus kadabba. Ardipithecus shows a mix of bipedal traits and adaptations for climbing, reflecting a transitional form in human evolution.
Genus: Ardipithecus Read More »
CHLCA candidate: Known from Kenya, Orrorin tugenensis is another early form, with femoral evidence suggesting bipedality, indicating it was likely an early walker.
In the verdant landscapes of Laetoli, Tanzania, beneath a layer of volcanic ash from a nearby eruption, a remarkable story is preserved. Dating back 3.66 million years, a series of footprints capture a fleeting moment in time when early hominins walked across the wet ash. These footprints, attributed to Australopithecus afarensis, represent one of the
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800,000 Generations Ago 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. This early ape lacked a tail and exhibited a mixture of arboreal and terrestrial traits, providing clues to the social and environmental challenges that likely spurred cognitive advancements.
Genus Proconsul (Self-Awareness Settles) Read More »
116,000 Generations Ago This genus is more directly ancestral to humans and includes several species, such as Australopithecus afarensis (famously represented by “Lucy”), Australopithecus africanus, and others. Australopithecines show a greater commitment to bipedalism and have features more closely resembling modern humans, although they still retained some adaptations for climbing. This genus is known for
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320,000 Generations Ago Last Gorilla-Chimp-Human ancestor: The last common ancestor of gorillas, chimpanzees, and humans likely lived about 8 to 10 million years ago. Both the Nakalipithecus and Chororapithecus genuses are candidates. Genus Nakalipithecus: This “might” be the leading plausible candidate. From Kenya, they are dated to about 10 million years ago. Location: Emerged in Western
Gorillas Branch Off: Genus Nakalipithecus Read More »
260,000 Generations Ago CHLCA candidate: Often considered one of the earliest potential hominins, Sahelanthropus tchadensis, best known from the “Toumai” skull found in Chad, exhibits features that suggest bipedalism but remains debated due to limited fossil evidence. With two human anatomical traits, small canine teeth, and a spinal cord hole in the cranium further forward
Genus: Sahelanthropus (Walking Upright) Read More »
The earliest known stone tools date back to at least 3.3 million years ago. They are identified by their purposeful flaking patterns, sharp edges, and location with other more identifiable artifacts or fossils. They are then verified with microscopic analysis confirming repetitive use.
92,000 Generations Ago Earliest Identified Human: Earlier hominins are “humanoid,” due to their human-like features, but the term “human” is reserved for species in the genus Homo. Homo habilis is the earliest known of these “early humans.” First Earth Explorer: Known as the “handy man,” Homo habilis’s association with the earliest stone tools is evidence
Homo habilis: Our Intelligence Settles. Read More »
300,000 Generations Ago (from 2020 CE) Humans did not evolve from Chimpanzees, but both are the current evolution of a common ancestor. That common ancestor has yet to be identified and is sometimes referred to as the Chimpanzee–Human Last Common Ancestor (CHLCA). That ancestor lived in Africa about 7.5 million years ago, likely in East
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