WebPakicetus is an extinct genus of amphibious cetacean of the family Pakicetidae, which was endemic to Pakistan during the Eocene. This four-footed land mammal named Pakicetus, living some 50 million years ago in what we know as Pakistan today, bears the title of “first whale.” Straddling the two worlds of land and sea, the wolf-sized animal was a meat … Web30 sep. 2024 · This tiny animal lived between 53 million and 41 million years ago and was thought to wade around in shallow waters, looking for food. Another interesting adaptation crops up around 47 million years ago. Ambulocetus (which means walking whale) had eyes positioned on the top of it’s head.
Basilosaurus - Prehistoric Wildlife
Web7 nov. 2024 · We use "How long ago" to ask about a completely finished period of time. So we use the simple past. "How long" is similar to "since when" - the answer: for two years, since 2010 up to now. Michael Swan says: "We use a present perfect to say how long a situation or action has continued up to now." The OALD online gives this definition: Web6 dec. 2024 · The evolution of dolphins, or Delphinus, is believed to have started with the Pakiectus, a four legged, land walking mammal. The Pakiectus dates back to approximately 50 million years ago. Throughout the centuries, these animals have gone through drastic changes to become the modern day dolphin. how to take note minutes of meeting
How Did Whales Evolve? Science Smithsonian Magazine
Web教案舒tpo1-25逐题解析.pdf,before Basilosaurus. The fossil luckily includes a good portion of the hind legs. The legs were strong and ended in long feet very much like those of a modern pinniped. The legs were certainly functional both on land and at sea. The whale retained a WebThis animal inhabited the planet Earth approximately 50 to 48 million years ago, which takes us to the time of the Eocene, in the Upper Kuldana Formation. Its habitat was mainly marked by the warm waters of the Tethys Sea, a prehistoric ocean that existed about 250 million years ago, separating the African continent from the Middle East. Web40.4 to 33.9 million years ago Dorudon (spear-tooth) is a genus of extinct basilosaurid ancient whales that lived alongside Basilosaurus 40.4 to 33.9 million years ago in the Eocene. They were about 5 m (16 ft) long and fed on small fish and mollusks. Dorudon lived in warm seas around the world. ready to move flats in ravet