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The Plesiosauria[ a ][ 4 ] or plesiosaurs are an order or clade of extinct Mesozoic marine reptiles, belonging to the Sauropterygia. Plesiosaurs first appeared in the latest Triassic Period, possibly in the Rhaetian stage, about 203 million years ago. [ 5 ] They became especially common during the Jurassic Period, thriving until their ...
Pliosaurus brachyspondylus was first described and named by Owen in 1839, as a species of Plesiosaurus. The specific name is derived from βραχυς, brachus, meaning "short" and σπόνδυλος, spondylos, meaning "vertebra" in Ancient Greek. [ 22 ] It was named on the basis of a series of unassociated cervical vertebrae as the holotype.
This list of plesiosaur type specimens is a list of fossils serving as the official standard-bearers for inclusion in the species and genera of the reptile clade Plesiosauria, which includes the short-necked pliosaurs and long necked plesiosauroids. Type specimens are those which are definitionally members of biological taxa and additional ...
Debora Patta, Agnes Reau, Tucker Reals. Updated October 11, 2024 at 12:09 PM. Khodor, southern Lebanon — War came without warning to the village of Khodor in Lebanon's Bekaa Valley. Israel's ...
Lamarck, 1809. Genera. See text. Ark clam is the common name for a family of small to large-sized saltwater clams or marine bivalve molluscs in the family Arcidae. Generally less than 80 mm long, ark clams vary both in shape and size. They number about 200 species worldwide. [1]
Description. Plesiosaur swimming animation.ogv. Efficient swimming motions of plesiosaurs. 3D model based on Meyerasaurus victor (specimen SMNS 12478). Animation showing the most efficient swimming motions that were found in each of the three joint ranges (wide, medium, and narrow). For each joint range, animations are shown for both sets of ...
The Ark of the Covenant, [a] also known as the Ark of the Testimony[b] or the Ark of God, [c][1][2] is a purported religious storage and relic held to be the most sacred object by the Israelites. Religious tradition describes it as a wooden storage chest decorated in solid gold accompanied by an ornamental lid known as the Seat of Mercy.
Georgiasaurus ("Georgy's lizard"; after V. A. Otschev's father, Georgy Otschev, a geodesist who died shortly before Otschev published the description in 1976) is an extinct genus of plesiosaur from the Late Cretaceous of Russia. Otschev (or Ochev) originally named the specimen Georgia, but that name was preoccupied (Baird & Girrard, 1853).