As Chabli had left the field of paleontology, the type species Lurdusaurus arenatus was formally named by Taquet and Dale Russell in 1999.
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In 2010 however, Gregory S. Paul gave a lower estimate of seven metres and 2.5 tonnes.
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Lurdusaurus was contemporaneous with the bizarre large theropod Suchomimus, which some believe to be synonymous with the slightly earlier Baryonyx from England, and with the sympatric Ouranosaurus, notable for its tall-spined vertebrae.