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Basilosaurus, one of the first of the giant whales, appeared in the fossil record. 38 Ma Earliest bears. 37 Ma First nimravid ("false saber-toothed cats") carnivores — these species are unrelated to modern-type felines. First alligators and ruminants. 35 Ma Grasses diversify from among the monocot angiosperms; grasslands begin to expand.
The first fully terrestrial vertebrates were reptilian amniotes — their eggs had internal membranes that allowed the developing embryo to breathe but kept water in. This allowed amniotes to lay eggs on dry land, while amphibians generally need to lay their eggs in water (a few amphibians, such as the common Suriname toad, have evolved other ways of getting around this limitation).
Dolly Dolly (taxidermy) Other name(s) 6LLS (code name) Species Domestic sheep (Finn-Dorset) Sex Female Born (1996-07-05) 5 July 1996 Roslin Institute, Midlothian, Scotland Died 14 February 2003 (2003-02-14) (aged 6) Roslin Institute, Midlothian, Scotland Cause of death Euthanasia Resting place National Museum of Scotland (remains on display) Nation from United Kingdom (Scotland) Known for ...
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
1752. Founding of the Schönbrunn Zoo in Vienna, the world's oldest continuously operating zoo. 1753. The British Museum was founded in the will of Sir Hans Sloane (English (born Ireland), 1660–1753). It would open its doors in 1759. 1758. Albrecht von Haller (Swiss, 1708–1777) was one of the founders of modern physiology.
Acanthostega is an extinct tetrapod, among the first animals to have recognizable limbs. It is a candidate for being one of the first vertebrates to be capable of coming onto land. It lacked wrists, and was generally poorly adapted for life on land. The limbs could not support the animal's weight.
While most people know that a baby dog is called a puppy, many may not know what a baby elephant is called. In this fun infographic, explore the world of baby animals. Find out what they’re ...
The first cloned goat in China was from adult ear skin, it was born at Yangling, Northwest A&F University. [45] The Middle East's first and the world's fifth cloned goat, Hanna, was born at the Royan Institute in Isfahan, Iran in 2009. The cloned goat was developed in the surrogate uterus of the Bakhtiari goat. Iranian researchers were reported ...