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Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
ostrich : a swift-footed 2-toed flightless ratite bird (Struthio camelus) of Africa that is the largest of existing birds and often weighs 300 pounds (140 kilograms) — Webster
Ostriches are a family, Struthionidae, of flightless birds. Ostriches first appeared during the Miocene epoch, though various Paleocene, Eocene and Oligocene fossils may also belong to the family. Ostriches are classified in the ratite group of birds, all extant species of which are flightless, including the kiwis, emus, and rheas. Traditionally the order Struthioniformes contained all the ratites. However, recent genetic analysis has found that the group is not monophyletic, as it is paraphyletic with respect to the tinamous, so the ostriches are classified as the only members of the order. There are two extant species of ostrich, the common ostrich and Somali ostrich, both in the genus Struthio, which also contains several species known from Holocene fossils such as the Asian ostrich. The common ostrich is the largest living bird species, and other ostriches are among the largest bird species ever. — Wikipedia
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.
- Early humans in the Kalahari were as innovative...on March 31, 2021 at 3:00 pm
Archaeological evidence in a rock shelter at the edge of the Kalahari Desert, South Africa, is challenging the idea that the origins of our species were linked to coastal environments. Published in Nature, Dr. Jayne Wilkins from Griffith University's Australian Research Centre for Human Evolution led an international collaboration which found evidence far from coastal sites of the complex symbolic and technological behaviors that define modern humans, stretching back 105,000 years.
- Giant fossil flightless bird had an enormous body...on March 24, 2021 at 12:47 pm
The largest flightless bird ever to live weighed in up to 600kg and had a whopping head about half a meter long—but its brain was squeezed for space.
- Social psychologist offers key to ending racismon February 23, 2021 at 1:13 pm
Social psychologist Robert Livingston has spent decades studying racism and advising businesses and nonprofits how to confront it in their workplaces. In a new book, "The Conversation: How Seeking and Speaking the Truth About Racism Can Radically Transform Individuals and Organizations," the Harvard Kennedy School lecturer in public policy argues that racism can be battled with constructive dialog. The Gazette recently spoke to Livingston about what fuels his optimism and how people can help […]
- Dense sampling of bird diversity increases power...on February 5, 2021 at 1:25 pm
Lainy Day, an associate professor of biology at the University of Mississippi and director of the university's neuroscience minor, has published an article in Nature, an international journal that publishes the finest peer-reviewed research in all fields of science and technology.
- Drone and landsat imagery shows long-term change...on February 3, 2021 at 6:32 pm
In the Namib Desert in southwestern Africa, the Kuiseb River, an ephemeral river which is dry most of the year, plays a vital role to the region. It provides most of the vegetation to the area and serves as a home for the local indigenous people, and migration corridor for many animals. The overall vegetation cover increased by 33% between 1984 and 2019, according to a Dartmouth study published in Remote Sensing .