Tree of Life

Cosma / Communication / Knowledge / Realm / Terrestrial / Life / Tree of Life
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Introduction1

FuseSchool Global Education (YouTube Channel)
FuseSchool (Facebook)

Encyclopedia

Tree of life or Universal Tree of Life is a metaphor, model and research tool used to explore the evolution of life and describe the relationships between organisms, both living and extinct, as described in a famous passage in Charles Darwin’s On the Origin of Species (1859).

The affinities of all the beings of the same class have some-
times been represented by a great tree. I believe this simile
largely speaks the truth. — Charles Darwin

Tree diagrams originated in the medieval era to represent genealogical relationships. Phylogenetic tree diagrams in the evolutionary sense date back to at least the early 19th century. The term phylogeny for the evolutionary relationships of species through time was coined by Ernst Haeckel, who went further than Darwin in proposing phylogenic histories of life. In contemporary usage, tree of life refers to the compilation of comprehensive phylogenetic databases rooted at the last universal common ancestor of life on Earth. — Wikipedia

Tree of Life (Encyclopædia Britannica)

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Exploration

Gaia’s Greenhouse

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Click on objects to find out about them.

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You can also explore this Toy World on Kuula.

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Inspiration

Cabinet of Wonders: Personal Collection of Alfred Russel Wallace (Lisa-Joy Zgorski, Live Science)
Alfred Russel Wallace (Encyclopædia Britannica)

Articles about the Tree of Life (Big Think)

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Innovation

Science

Phylogenetics is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by phylogenetic inference methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences, or morphology. The result of such an analysis is a phylogenetic tree—a diagram containing a hypothesis of relationships that reflects the evolutionary history of a group of organisms.– Wikipedia

Phylogenetics (Encyclopædia Britannica)

A View of All Known Life (One Zoom)
The Importance of Scientific Names (Catalogue of Life)

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Preservation

Library

DDC: 572.838 Phylogenetic (Library Thing)
Subject: Phylogenetics (Library Thing)

Subject: Phylogenetics (Open Library)

LCC: QH 390 Phylogenetics (UPenn Online Books)
Subject: Phylogenetics (UPenn Online Books)

LCC: QH 390 Phylogenetics (Library of Congress)
Subject: Phylogenetics (Library of Congress)

Subject: Phylogenetics (WorldCat)

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Participation

Education

Science Trek (YouTube Channel)
Kingdoms (Science Trek, Official Website)

Tree of Life (Ology, American Museum of Natural History)
Journey Into Phylogenetic Systematics (Museum of Paleontology, University of California, Berkeley)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

Occupation

Zoologists and Wildlife Biologists (CareerOneStop, U.S. Department of Labor, Employment and Training Administration)

Organization

American Institute of Biological Sciences

News

Phylogenetics (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Phylogenetics (EurekaAlert, American Association for the Advancement of Science)
Tree of Life (JSTOR)
Phylogenetics (Science Daily)
Phylogenetics (Science News)


More News …

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • The invasive fern that science misidentified for...
    on June 30, 2026 at 5:00 pm

    Salvinia molesta can double its biomass in 36 hours. It spreads across ponds, lakes and slow-moving waterways in a smothering green mat, blocking sunlight, consuming oxygen and collapsing the ecosystems beneath it. Now present in freshwater bodies across more than 60 countries, it ranks among the top 100 most invasive species in the world. Scientists have long wanted to understand what makes it so relentlessly effective.

  • Tiny ancient fish fossil with preserved brain...
    on June 30, 2026 at 4:40 pm

    Over 300 million years ago, a minnow-sized fish died and fell to the bottom of a prehistoric swamp near the village of Trawden, Lancashire, in northwest England. The remains of this tiny fish—known as Trawdenia planti—became fossilized, embedding proof of its existence in a layer of soapstone sandwiched between coal seams in the Burnley coalfields. By some combination of marine chemistry, mineral composition of the seafloor, timing and luck, not only was the bony skeleton of this fish […]

  • Camouflaging snails change color in the rain
    on June 30, 2026 at 2:00 pm

    How does a stripy tree snail hide from hungry birds? The Hypselostyla camelopardalis from the Philippines and Reinia variegata from Japan have both evolved a form of dynamic camouflage to survive. Their light-colored patterns vanish in the rain, and the shell turns dark brown, similar to damp tree bark.

  • Deep-sea extremophile yields protein that forms...
    on June 29, 2026 at 9:50 pm

    Scientists discovered a protein secreted by a deep-sea extremophile—an organism adapted to extreme environmental conditions—that self-assembles into a biofilm and is highly stable, boosting its potential for biomedical applications.

  • When mitochondria grow abnormally long, leaked...
    on June 29, 2026 at 7:50 pm

    Researchers from the University of Osaka have demonstrated that mitochondrial hyperfusion, when induced by low levels of DRP1 or cellular stress, activates an immune response through the RIG-I–MAVS pathway. Dependent on the involvement of the BAX protein, the release of mitochondrial RNA into the cytosol enhanced natural killer cell cytotoxicity and reduced tumor growth in a xenograft model. The findings, published in Cell Reports, provide new possibilities for cancer research and treatment.

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial   (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Animal
Invertebrate
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Vertebrate
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human

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Notes

1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.