Learning more about pterosaur tracks from Gondwana: a case study from the lower–middle Campanian (Upper Cretaceous) Anacleto Formation, northern Patagonia, Argentina

HEREDIA ARTURO M.; DÍAZ-MARTÍNEZ IGNACIO; CITTON PAOLO; DE VALAIS SILVINA; CÓNSOLE-GONELLA CARLOS; GONZÁLEZ SANTIAGO N.; SALGADO LEONARDO

Khon Kaen

Congreso; 6th International Palaeontological Congress; 2022

International Palaeontological Association

Although pterosaur remains are abundant in the Cretaceous of Gondwana, pterosaur tracks are relatively scarce. This pterosaur track record is only known in Morocco from the Cenomanian Kem Kem beds, the Coniacian–Santonian Anza tracksite and the Maastrichtian Tagragra Formation, and in Argentina from the Cenomanian Candeleros Formation (see Calvo and Lockley, 2001; Lockley et al., 2008; Masrour et al., 2018; Heredia et al., 2022). In this contribution, we report four pterosaur manus tracks found in a new tracksite of the lower–middle Campanian Anacleto Formation of the Neuquén Basin, within the Área Natural Protegida Municipal Paso Córdoba in the Río Negro Province, northern Patagonia, Argentina. The manus tracks are preserved in four small slabs as convex hyporeliefs from fluvio-alluvial deposits. They are longer than wide (average 6.3 cm long, 3.0 cm wide), rhomboidal in shape, tridactyl with digit impressions of different lengths (I