Left humerus of Haestasaurus becklesii (NHMUK R1870). A, anterior view; B, posterior view; Abbreviations: af, anconeal fossa; dp, deltopectoral crest; hh, humeral head; ltf, lateral triceps fossa; mtf, medial triceps fossa. This fossil was found in strata of the Hastings Beds (late Berriasian—Valanginian in age) on the coast near Hastings, East Sussex, England.