Species: anatoceps SALISBURY, FREY, MARTILL, & BUCHY, 2003
Etymology: Latin, anas, "duck" and Latin, caput, "head";
In reference to the duck-like nature of the caput (head), with its long dorsoventrally
flattened rostrum maxillae.
Holotype: SMNK 3804 PAL
Locality: Sonewhere within the quarrying region in the Caririucu Valley, Araripe Basin, Ceara State, Northeastern Brazil.
Horizon: Nova Olinda Member, Crato Formation.
Biostratigraphy:
Age: Aptian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch, Early Cretaceous.
Material: Skull, mandible and partial postcranial axial skeleton, forelimbs and portions of the ostodermal skeleton.
Referred material:
MPSC-R1137: A complete partially articulated right hind limb, including femur, tibia, fibula and pes.
FIGUEIREDO, MOREIRA, SARAIVA & KELLNER, 2011
MPSC-R1136: Partially articulated postcranial remains comprising cervical and dorsal vertebrae, bones of the pectoral girdle including the right forelimb, and osteoderms from the dorsal shield.
MONTEFELTRO, BRONZATI, LANGER & ANELLI, 2019 (published 2020)
Locality: Unknown, Northeastern Brazil.
Horizon: Santana Group.
Biostratigraphy:
Age: Aptian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch, Early Cretaceous.
Material:
GP/2E 9267: Skull, mandible and partial postcranial axial skeleton (dorsal, sacral, and caudal vertebrae) artifically amalgamated and possibly representing 2 specimens.
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Species: jaguaribensis FORTIER & SCHULTZ, 2009
Etymology: After Jaguaribe, the name of an important perennial river that provides water for the Iguatu region, Ceara State, north-east Brazil.
Holotype: UFRGS-PV0001K
Locality: South of Lim Campos dam, at the municipality of Ico, Ceara State, north-east Brazil.
Horizon:
Biostratigraphy:
Age: Berriasian Stage, Lower Neocomian Subepoch, Lower Early Cretaceous-Barremian Stage, Lower Gallic Subepoch, Middle Early Cretaceous Epoch, Early Cretaceous.
Material: Posterior portion of skull.