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Aepisaurus ( /ˌpɨˈsɔrəs/; derived from the Greek: αἰπεινός - 'lofty/high' and σαυρος - 'lizard', i.e. "lofty lizard") was a genus of sauropod dinosaur from the Albian-age Lower Cretaceous Grès vert of Départment du Vaucluse, France, around 100 million years ago. It is an obscure genus from an unknown family, represented by a single humerus, now lost. Despite its lack of popularity, or perhaps because of it, it has been misspelled several ways in the scientific literature, with multiple dates given to the year of description as well.

French paleontologist Paul Gervais described the new genus based on MNHN 1868-242, a humerus found at Mont Ventoux, near Bédoin. The bone was 90 cm (35.43 in) long, 33 cm (13 in) wide at the proximal end, 15 cm (5.91 in) wide in the middle, and 25 cm (9.84 cm) wide at the distal end. From the same locality, he referred a conical tooth he thought could belong to a larger second species, and from elsewhere added to A. sp. (a practice used to denote that the remains belong to a certain genus, but the species is not known) a partial humerus and ulna.
Pcab123 aepisaurus

Since the appearance of Titanosauridae, it has typically been referred to that family because the slender humerus resembles that of Laplatasaurus.However, as noted by McIntosh (1990), the bone is also like that of Camarasaurus and some brachiosaurids.

Le Loeuff (1993), in his review of European titanosaurs, could not locate the type specimen, and found that the illustration of it did not allow it to be placed with any sauropod group. Based on proportions, it could not be placed with camarasaurids or titanosaurids.The additional remains referred to it by Gervais were removed, and in the case of the tooth, probably belonged to a crocodilian.Although McIntosh considered the genus to be Sauropoda incertae sedis (uncertain placement),the latest review agreed with Le Loeuff and listed the genus as a dubious sauropod.As a sauropod, Aepisaurus would have been a large quadrupedal herbivore.

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