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Timeline of evolution
This timeline of the evolution of life outlines the major events in the development of life on the planet Earth. Dates given are estimates based on scientific evidence.
In biology, evolution is the process by which populations of organisms acquire and pass on novel traits from generation to generation. Its occurrence over large stretches of time explains the origin of new species and ultimately the vast diversity of the biological world. Contemporary species are related to each other through common descent, products of evolution and speciation over billions of years. The basic timeline is a 4600 million year old Earth with: 4000 my (million years) of simple cells; 3000 my of photosynthesis; 2000 my of complex cells; 1000 my of multicellular life; 600 my of simple animals; 500 my of fish and proto-amphibians; 475 my of land plants; 400 my of insects and seeds; 360 my of amphibians; 300 my of reptiles; 200 my of mammals; 150 my of birds; 100 my of flowers; and 65 my since the non-avian dinosaurs died out.
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Plants & Animals News
October 16, 2025
Oct. 11, 2025 — Researchers have unearthed South America’s first amber deposits containing ancient insects in an Ecuadorian quarry, offering a rare 112-million-year-old glimpse into life on the supercontinent ...
Oct. 10, 2025 — Coccolithophores, tiny planktonic architects of Earth’s climate, capture carbon, produce oxygen, and leave behind geological records that chronicle our planet’s history. European scientists are uniting to honor them with International ...
Oct. 10, 2025 — Researchers have cracked the code behind how plants make mitraphylline, a rare cancer-fighting molecule. Their discovery of two critical enzymes explains how nature builds complex spiro-shaped compounds. The work paves the way for sustainable, ...
Oct. 9, 2025 — Tree swallows in polluted U.S. regions are accumulating high levels of “forever chemicals.” These durable pollutants, used in firefighting foams and consumer products, are found everywhere from soil to human blood. Surprisingly, researchers ...
Oct. 8, 2025 — Kobe University researchers found that orchids rely on wood-decaying fungi to germinate, feeding on the carbon from rotting logs. Their seedlings only grow near deadwood, forming precise fungal partnerships that mirror those seen in adult orchids ...
Oct. 8, 2025 — Researchers at KAUST have confirmed that the Red Sea once vanished entirely, turning into a barren salt desert before being suddenly flooded by waters from the Indian Ocean. The flood carved deep channels and restored marine life in less than ...
Oct. 6, 2025 — Scientists studying tiny roundworms have uncovered how the secrets of a long life can be passed from parents to their offspring — without changing DNA. The discovery shows that when certain cellular structures called lysosomes change in ways that ...
Oct. 5, 2025 — New research reveals that deep-sea mining could dramatically threaten 30 species of sharks, rays, and ghost sharks whose habitats overlap with proposed mining zones. Many of these species, already at risk of extinction, could face increased dangers ...
Oct. 4, 2025 — HydroSpread, a breakthrough fabrication method, lets scientists build ultrathin soft robots directly on water. These tiny, insect-inspired machines could transform robotics, healthcare, and environmental ...
Oct. 3, 2025 — Billions of years ago, Earth’s atmosphere was hostile, with barely any oxygen and toxic conditions for life. Researchers from the Earth-Life Science Institute studied Japan’s iron-rich hot springs, which mimic the ancient oceans, to uncover how ...
Oct. 1, 2025 — Fungi may have shaped Earth’s landscapes long before plants appeared. By combining rare gene transfers with fossil evidence, researchers have traced fungal origins back nearly a billion years earlier than expected. These ancient fungi may have ...
Sep. 30, 2025 — A team of researchers tested morin, a plant compound, against gum disease bacteria and found strong antimicrobial benefits. By encapsulating it in polymers, they created a powdered form for oral hygiene products. This could replace antibiotics, ...
Latest Headlines
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Oct. 16, 2025 — Scientists discovered true teeth growing on the head of the spotted ratfish, a distant shark relative. The toothed structure, called a tenaculum, helps males hold onto females during mating. Genetic ...
Oct. 15, 2025 — A parasitic worm uses static electricity to launch itself onto flying insects, a mechanism uncovered by physicists and biologists at Emory and Berkeley. By generating opposite charges, the worm and ...
Oct. 15, 2025 — Scientists have uncovered a 151-million-year-old midge fossil in Australia that challenges long-held views about insect evolution. Named Telmatomyia talbragarica, the fossil shows freshwater ...
Oct. 13, 2025 — Scientists from the Indian Institute of Science (IISc) and Caltech have finally solved a decades-old mystery about how photosynthesis really begins. They discovered why energy inside plants flows ...
Oct. 12, 2025 — Researchers in Italy discovered 400,000-year-old evidence that ancient humans butchered elephants for food and tools. At the Casal Lumbroso site near Rome, they found hundreds of bones and stone ...
Oct. 12, 2025 — New research along Turkey’s Ayvalık coast reveals a once-submerged land bridge that may have helped early humans cross from Anatolia into Europe. Archaeologists uncovered 138 Paleolithic tools ...
Oct. 12, 2025 — Complex, intelligent life in the galaxy appears vanishingly rare, with the nearest possible civilization perhaps 33,000 light-years distant. Yet despite the odds, scientists insist that continuing ...
Oct. 11, 2025 — Dolphins washing up on Florida’s shores may be victims of the same kind of brain degeneration seen in humans with Alzheimer’s disease. Researchers discovered that cyanobacterial toxins—worsened ...
Oct. 9, 2025 — In a stunning glimpse into the mysteries of the deep, scientists have uncovered two new marine species off Western Australia—a glowing lanternshark and a tiny porcelain crab. The discoveries, made ...
Oct. 6, 2025 — Birds across the globe independently evolved a shared warning call against parasites, blending instinct and learning in a remarkable evolutionary pattern. The finding offers a rare glimpse into how ...