Prismatoolithus

Prismatoolithus Temporal range: Hauterivian-Maastrichtian ~130–66  Ma PreꞒ Ꞓ O S D C P T J K Pg N
Prismatoolithus tiantaiensis eggs, Paleozoological Museum of China
Egg fossil classification
Basic shell type:	† Dinosauroid-prismatic
Oofamily:	† Prismatoolithidae
Oogenus:	† Prismatoolithus
Oospecies
P. caboti P. gebiensis P. hanshuiensis P. heyuanensis P. hirschi P. hukouensis P. ilekensis P. jenseni P. levis P. matellensis P. tenuis P. tiantaiensis P. trempii

Prismatoolithus is an oogenus of dinosaur egg from the Cretaceous (Hauterivian-Maastrichtian) and possibly also the earliest Paleocene. They likely belonged to troodontids. ^{[1] [2]}

References

1. Carpenter, K. 1999. Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction (Life of the Past). Indiana University Press, Bloomington, Indiana.
2. Mateus, I, H Mateus, MT Antunes, O Mateus, P Taquet, V Ribeiro, G Manuppella. 1998. Upper Jurassic theropod dinosaur embryos from Lourinhã (Portugal). Memórias da Academia das Ciências de Lisboa 37, 101-110