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.

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.

UALVP 45640: 14 articulated vertebrae of a juvenile.

UALVP 45641: 12 articulated vertebrae of an adult.

UALVP 45642: Fragmentary snout including right and left maxillae with teeth, partial premaxillae, right and left dentaries with teeth and possible left splenial.

UALVP 45643: Fragmentary snout including right maxilla, partial lacrimal, partial jugal and partial prefrontal.

Referred material:

= Ophthalmosaurus cantabrigiensis LYDEKKER, 1888
= Brachypterygius cantabrigiensis (LYDEKKER, 1888) McGOWAN & MONTANI, 2003
Etymology:

Holotype: BMNH 43989

Locality: Cambridge, Cambridgeshire County, England, Southern United Kingdom.

Horizon: Upper Cambridge Greensand.

Biostratigraphy:

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

Material: Left humerus.
Note: Incorrectly described as a right humerus.

Referred material:

FISCHER, BARDET, GULOMAR, & GODEFROIT, 2014

NHMUK 32406, R16: Partial tooth.

NHMUK 47268: 5 teeth.

CAMSM B58042, B58053, B58050, B58045, B58055, IRSNB GS3, LEICT G65.1881, NHUK 35348: Humeri.

CAMSM TN1727: Partial humerus.

CAMSM TN1766: 2 partial humeri.

NHMUK R2343: 3 humeri.

NHMUK R4513: 2 humeri.

IRSNB GS60: Anterior accesory epipodial element.

 

Locality: England.

Horizon: Gault Formation.

Biostratigraphy:

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

Material:

NHMUK R16, R17: Partial teeth.

 

= Platypterygius ochevi ARKHANGELSKY, AVERIANOV, PERVUSHOV, RATNIKOV & ZOZYREV, 2008
Etymology: In memory of the paleozoologist and professor of Saratov State University, Vitalii Georgievich Ochev.

Holotype: ZIN PH 1/71

Locality: Right bank of the Veduga River, San quarry 2 km north of the town of Semiluki, Semilukskii District, Voronezh Region, European Russia.

Horizon:

Biostratigraphy:

Age: Albian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch,-Cenomanian Stage, Middle Gallic Subepoch, Lowermost Gulf Epoch, Early Cretaceous.

Material: Fragments of cranial bones, incomplete coracoid, forelimbs, partial vertebral column and rib fragments.

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