Species: icaeorhinus SIMPSON, 1937
Etymology:

Holotype: AMNH 3160

Locality: "Bird Clay", Canadon Honodo, Chubut Province, Patagonia, Argentina.

Horizon: Casamayor Formation.

Biostratigraphy:

Age: Early Eocene Epoch, Middle Paleogene Period, Tertiary Subera, Cenozoic Era.

Material: Left premaxilla, right and left maxillae, right and left nasals, right and left frontals, right and left parietal, right and left lacrymals, right and left prefrontals, left jugal, left squamosal, left quadratojugal, right and left palatines, right and left ectopterygoids, left quadrate, left occipital, left postoptic, basisphenoid, brain case, right and left palpebrals, right and left dentaries, left angular, left surangular, right articular. Some of these are incomplete.

Referred material:

FMNH PR 861: Cast of type.

POL & PUERTA, 2003

Number: Not given: 18 presacral, 1 sacral and 5 caudal vertebrae, fragmentary pelvis, scapula, and fragmentary remains.

Locality: Canadon Vaca, Chubut Province, Patagonia, Argentina.

Horizon: Casamayor Formation.

Horizon:

Biostratigraphy:

Age: Early Eocene Epoch, Middle Paleogene Period, Tertiary Subera, Cenozoic Era.

Material:

AMNH 3159: Left maxilla, left nasal, left frontal, right and left prefrontals, right and left jugals, left ectopterygoid, right and left quadrates, left quadratojugal, left squamosal and right surangular, centrum of cervical vertebra, right femur, distal end of fibula, all of these are incomplete and most of them are mere fragments.

GASPARINI, 1972

MMP No. 235: Skull and lower jaw.

 

POL, LEARDI, LECUONA & KRAUSE, 2012

Locality: "Cerro Verde" locality, western margin of Canadon Honodo, Chubut Province, Patagonia, Argentina.

Horizon: Casamayor Formation.

Biostratigraphy:

Age: Early Eocene Epoch, Middle Paleogene Period, Tertiary Subera, Cenozoic Era.

Material:

Lowermost level

MPEF-PV 3970: Cervical 3.

MPEF-PV 3971: Cervical 8.

MPEF-PV 3972: Proximal coraoid, distal humerus, proximal femur, astragali and calcaneum belonging to at least two different individuals.

Upper level

MPEF-PV 1776: Paritally articulated specimen including anterior region of the dentary and most of the postcranial skeleton.

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Species: ayrampu BRAVO, POL & GARCIA-LOPEZ, 2022
Etymology: The species name referes to the reddish color of the sediments of the Mealla Formation that recall the characeristic color of the ayrampu or ayrampo, a fruit of nutritional importance for the peoples of the high valleys of the region.

Holotype: PVL 2606

Locality: Near the locality of Mina Aguilar, Juju Province, Argentina.

Horizon: Mealla Formation.

Biostratigraphy:

Age: Middle-Late Paleocene Epoch, Middle Paleogene Period, Tertiary Subera, Cenozoic Era.

Material: Rostral portion of skull and mandible, distal portion of left femur.