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Praya dubia is an active swimmer that attracts its prey with bright blue bioluminescent light. [15] When it finds itself in a region abundant with food, it holds its position and deploys a curtain of tentacles covered with nematocysts which produce a powerful, toxic sting that can paralyze or kill prey that happen to bump into it. [16]
The common name of gaikotsu-panda-hoya (ガイコツパンダホヤ, translated as "skeleton panda sea squirt" or "skeleton panda ascidian") was given to the animal by Japanese internet users after the first pictures were shared online.
They are more-or-less cup-shaped animals, ranging from 10 to 30 centimetres (3.9 to 11.8 in) in height, with sturdy skeletons made of glass-like silica spicules, fused to form a lattice. [4] [5] In some glass sponges such as members of the genus Euplectela, these structures are aided by a protein called glassin.
Epicyon haydeni is the largest known canid of all time, with the type species reaching 2.4 m (7.9 ft) in length, 90 cm (35 in) in shoulder height and approximately 100–125 kg (220–276 lb) in body mass. [3] [4] [5] The largest known humerus specimen belonged to an individual weighing up to 170 kg (370 lb). [6]
In 2002, a skeleton nicknamed "Wyrex", discovered by amateur collectors Dan Wells and Don Wyrick, had 114 bones and was 38% complete. The dig was concluded over 3 weeks in 2004 by the Black Hills Institute with the first live online Tyrannosaurus excavation providing daily reports, photos, and video. [5]
The full length of the body is estimated at no more than 4 meters (13 feet). [5] However, Gregory S. Paul gave a higher estimate of 4.7 m (15 ft) in length and 300 kg (660 lb) in body mass. [ 6 ] Unlike more derived iguanodontians, it still had teeth in the tip of the beak ( premaxillary teeth), and a first toe .
Ape skeletons. A display at the Museum of Zoology, University of Cambridge.From left to right: Bornean orangutan, two western gorillas, chimpanzee, human. The evolution of human bipedalism, which began in primates approximately four million years ago, [1] or as early as seven million years ago with Sahelanthropus, [2] [3] or approximately twelve million years ago with Danuvius guggenmosi, has ...
Goyocephale is an extinct genus of pachycephalosaurian ornithischian that lived in Mongolia during the Late Cretaceous about 76 million years ago. [1] It was first described in 1982 by Altangerel Perle, Teresa Maryańska and Halszka Osmólska for a disarticulated skeleton with most of a skull, part of the forelimb and hindlimb, some of the pelvic girdle, and some vertebrae.