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Login Name: 9HI4NSVMUE Password: FYPSEC51XZ S7CA98GQA8 BAVIZV23HM T3918I4QAJ ES262II8H5 throughout the body, elements from the shoulder girdle and pelvis, humeri (upper arm bones), femora (upper leg bones), and various other limb bones.[3] In 1866, geologist Adam Sedgwick purchased the specimen for the University of Cambridge's Woodwardian Museum (now the Sedgwick Museum of Earth Sciences, Cambridge),[2] with the specimen being catalogued as CAMSM J.46913 and stored in the university's lecture room within cabinet D.[2][3] Palaeontologist Harry Govier Seeley described the specimen as a new species of the preexisting genus Plesiosaurus, Plesiosaurus philarchus, in 1869.[3] The specific name means 'power-loving', possibly due to its large, powerful skull.[4] Seeley did not describe this specimen in detail, mainly just giving a list of the known material.[3] While later publications would further describe these remains, CAMSM J.46913 remains poorly described.[2] Alfred Leeds and his brother Charles Leeds had been collecting fossils from the Oxford Clay since around 1867, encouraged by geologist John Phillips of the University of Oxford, assembling what became known as the Leeds Collection. While Charles eventually left, Alfred, who collected the majority of the specimens, continued to gather fossils until 1917. Eventually, after a visit by Henry Woodward of the British Museum of Natural History (now the Natural History Museum in London) to Leeds' collection in Eyebury in 1885, the museum bought around 5 tonnes (5.5 short tons) of fossils in 1890. This brought Leeds' collection to wider renown, and he would later sell specimens to museums throughout Europe, and even some in the United States.[5] The carefully prepared material was usually in good condition, although it quite frequently had been crushed and broken by geological processes. Skulls were particularly vulnerable to this.[6]: v–vi  illustration of a partial mandible and two partial vertebrae Mandible and vertebrae of the specimen described by Lydekker Naturalist Richard Lydekker was informed of a plesiosaur skeleton in the British Museum of Natural History by geologist George Charles Crick, who worked there. The specimen, catalogued under NHMUK R1253,[2] had been discovered in the Oxford Clay Formation in Green End, Kempston, near Bedford. While Lydekker speculated that the skeleton was once complete, it was damaged during excavation. The limb girdles had been heavily fragmented when the specimen arrived at the museum, but a worker named Lingard in the Geology Department managed to restore much of them. In addition to the limb girdles, the specimen also consists of a partial mandible, teeth, multiple vertebrae (although none from the neck), and much of the limbs. Lydekker identified this specimen as an individual of Plesiosaurus philarchus and published a description of it in 1889. After studying this and other specimens in the Leeds Collection, he concluded that plesiosaurs with shortened necks and large heads could not be classified as species of Plesiosaurus, meaning that "P." philarchus belonged to a different genus. He initially assigned it to Thaumatosaurus in 1888,[7] but later decided that it was distinct enough to warrant its own genus, which he named Peloneustes in his 1889 publication.[8] The name Peloneustes comes from the Greek words pelos, meaning "mud" or "clay", in reference to the Oxford Clay Formation, and neustes, meaning "swimmer".[4] Seeley, however, lumped Peloneustes into Pliosaurus in 1892, claiming that the two were insufficiently different to warrant separate genera.[9] Seeley and Lydekker could not agree on which genus to classify P. philarchus in, representing part of a feud between the two scientists. However, Peloneustes has since become the accepted name.[7] diagram of the front and hind paddles Fore (left) and hind (right) paddles of NHMUK R2440, a specimen from the Leeds Collection The Leeds Collection contained multiple Pelone
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