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Ambulocetus is among the best-studied of Eocene cetaceans, and serves as an instrumental find in the study of cetacean evolution and their transition from land to sea, as it was the first cetacean discovered to preserve a suite of adaptations consistent with an amphibious lifestyle.
Largely complete skeleton, most complete known skeleton of Stegosaurus. Discovered in 2020 in Moffat County, Colorado, US Sotheby's July 17, 2024: New York $44,600,000 $44,600,000 Sold 11 times above pre-sale estimates to American billionaire financier Kenneth Griffin. Most expensive fossil ever sold as of 2024. [85] Vulcan Apatosaurus
They greatly affected cetacean evolution , because they spread across Earth's oceans. [7] They had long snouts, large eyes, and a nasal opening located farther up the head than in earlier archaeocetes — suggesting they could breathe with the head held horizontally, similar to modern cetaceans — a first step towards a blowhole.
The plant grows up to 0.4 m (1.3 ft). The flowers are white, pedicellate, with six obovate petals and bloom from May to July. [3] After it flowers, it bears dark blue/purple fruit with a white powdery coating from June to August. [4] Its stems are terete and grow 30–60 cm (12–24 in) long.
On land, there were at least 8 kinds of Eocene bird in New Jersey. [7] Miocene life in New Jersey included a brachiopod, a crustacean, more than 60 pelecypods and more than forty gastropods. [4] During the Quaternary northern New Jersey was covered by glaciers. Local sea levels rose and fell in time with the melting or expansion of the glaciers ...
Zygorhiza, mounted skeleton. Basilosaurids ranged in size from 4 to 16 m (13 to 52 ft) and were fairly similar to modern cetaceans in overall body form and function. [ 7 ] Some genera tend to show signs of convergent evolution with mosasaurs by having long serpentine body shape, which suggests that this body plan seems to have been rather ...
The following is a list of currently existing (or, in the jargon of taxonomy) 'extant' species of the infraorder cetacea (for extinct cetacean species, see the list of extinct cetaceans). The list is organized taxonomically into parvorders, superfamilies when applicable, families, subfamilies when applicable, genus, and then species.
The change in position of the eyes and limb bones is associated with the pakicetids becoming waders. The ambulocetids also began to develop long snouts, which is seen in current cetaceans. Their limbs (and hypothesized movement) were very similar to otters. [63] The skeleton of a bowhead whale with the hind limb and pelvic bone structure ...