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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. Its rhizomes are stout and knotty. The plant is ...
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Ambulocetus (Latin ambulare "to walk" + cetus "whale") is a genus of early amphibious cetacean [a] from the Kuldana Formation in Pakistan, roughly 48 or 47 million years ago during the Early Eocene . It contains one species, Ambulocetus natans (Latin natans "swimming"), known solely from a near-complete skeleton.
Today's Mediterranean cetacean population is the result of a constantly evolving history. Some species, such as the harbour porpoise, disappeared in historical times due to human influence, while others, such as the Indian Ocean humpback dolphin ( Sousa plumbea) , [ 14 ] could colonize the area thanks to the Suez Canal .
Transitional fossils typically represent animals from near the branching points. In evolutionary taxonomy, the prevailing form of taxonomy during much of the 20th century and still used in non-specialist textbooks, taxa based on morphological similarity are often drawn as "bubbles" or "spindles" branching off from each other, forming ...
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Species of the infraorder Cetacea A phylogenetic tree showing the relationships among cetacean families. [1]The evolution of cetaceans is thought to have begun in the Indian subcontinent from even-toed ungulates (Artiodactyla) 50 million years ago (mya) and to have proceeded over a period of at least 15 million years. [2]
Having been discovered in 25-million-year-old strata near the 60th parallel north, it is perhaps the oldest-known crown toothed whale and the northmost river dolphin discovered. It was a member of the now-extinct family Allodelphinidae , along with the genera Allodelphis , Goedertius , Ninjadelphis , and Zarhinocetus .