Genus: Hypuronector COLBERT & OLSEN, 2001
Etymology: Greek, hypo, "deep," Greek, uro, "tail" and Greek, nektor, "the swimmer"; meaning the "Deep tailed swimmer", the new reptile informal name for more than 20 years and was suggested by Donald Baird.

Species: limnaios COLBERT & OLSEN, 2001
Etymology: Greek, limnaios, "of the lake"; referring to the lacustrine environment in which the animal lived.

Holotype: AMNH 7759

Locality: Granton Quarry, Newark Basin, North Bergen County, New Jersey.

Horizon: Ewing Creek Member, cycle "G7", Lockatong Formation, Newark Supergroup.

Biostratigraphy:

Age: Newark series, Late Carnian Stage, Late Triassic Epoch, Late Triassic.

Material: A partially articulated skeleton lacking the skull; 11 presacrals, 2 possible sacrals and 38 caudals in close articulation, numerous ribs, shoulder girdle, forelimbs, pelvis, both femora, left tibia and fibula, distal ends of right tibia and fibula, both pedes and manus incomplete.

Referred material:

AMNH 1721: Anterior thoracic region including pectoral girdle.

AMNH 1998: 7 caudal vertebrae.

AMNH 2076: Vertebra.

AMNH 2080: A dentary with 7 teeth.

AMNH 7205: 5 presacral ribs, fragments of a pelvis, and 13 anterior caudal verterae.

AMNH 7755: 3 cervical vertebrae.

NJSM 19701: Partial mostly articulated posterior trunk and anterior tail.

NJSM 19702: Proximal caudal vertebra and haemal spine.

 

Locality: Weehawken, Newark Basin, Hudson County, New Jersey.

Horizon: Nursery Member, cycle W-5, Lockatong Formation, Newark Supergroup.

Biostratigraphy:

Age: Newark series, Late Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

YPM 8641: Proximal caudal vertebra and haemal spine.

YPM 56385: Limb bone.

YPM 56386: Distal end of humerus.

YPM 56387: Caudal vertebrae with chevron and ?humerus.

YPM 56388: Left mandible.

YPM 56389: Caudal vertebra and partial haemal spine.

YPM 56390: 3 associated caudal vertebrae with haemal spine.

YPM 56391: Obliquely preserved caudal vertebrae and partial haemal apine.

YPM 56392: Isolated sacral vertebra.

YPM 56393: Isolated forelimb.