Pronunciation: a-KIL-ee-SOR-us Meaning: Achilles lizard Author/s: Martinelli and Vera (2007) Synonyms: None known First Discovery: Río Negro, Argentina Chart Position: 490
(Manazzone's Achilles lizard)EtymologyAchillesaurus is derived from "Achilles" (in reference to the Greek Hero Achilles and his famously weak heel, because the holotype has diagnostic features in this portion of the skeleton) and the Greek "sauros" (lizard). The species epithet, manazzonei, honors Prof. Rafael Manazzone, an amateur paleontologist who assisted several field trips by providing valuable data about Patagonian fossil localities.
DiscoveryThe remains of Achillesaurus were discovered at Paso Córdova in the Bajo de la Carpa Formation (Río Colorado Subgroup, Neuquén Group), Río Negro Province, Argentina, by a José Bonaparte-led team from the Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" in 1995.
The holotype (MACN-PV-RN 1116) includes the last hip vertebra, the first two tail vertebrae (one with a chevron) plus one complete and one partial vertebra from elsewhere in the tail, the left ilium (a bone from the hip), the end of a thigh, the end of the left shinbone joined to the ankle, and portions of metatarsals II, III, and IV from the left foot.