Genus: Maiaspondylus MAXWELL & CALDWELL, 2006
Etymology: Greek, maia, 'good mother', and Greek, spondylus 'vertebra'; In reference to the associated embryonic material found near the vertebral column.
= Stenopterygidae nova MAXWELL & CALDWELL, 2003

Species: lindoei MAXWELL & CALDWELL, 2006
Etymology: In honor of Al Lindoe, who collected the specimens.

Holotype: UALV 45635

Locality: On the Hay River, 60°01'N, 116°57'W, Northwest Territories, Canada.

Horizon: Loon River Formation.

Biostratigraphy:

Age: Middle Albian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch, Early Cretaceous.

Material: An incomplete disarticulated individual preserved in three dimensions.

Paratypes:

UALVP 45639: 2 embryos agglutinated to eight articulated vertebrae.