''Youngoolithus'' is an
oogenus of
dinosaur egg.
[Carpenter, K. 1999. Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction (Life of the Past). Indiana University Press, Bloomington, Indiana.] It is the sole member of the
oofamily Youngoolithidae, and consists of a single oospecies: ''Youngoolithus xiaguanensis''. It consists of a single fossil nest of 16 eggs with an associated
dinosaur footprint that was first discovered in 1975 in the
Majiacun Formation near
Houzhuang Village,
Henan Province, in the
Cretaceous Xiaguan Basin. The eggs are smooth, olive-shaped, and arranged in five rows. It was originally described as being a
Faveoloolithid egg, however the nest is arranged quite differently than other members of that family, so it has been moved to its own oofamily, Youngoolithidae.
References
Dinosaur reproduction
Fossil parataxa described in 1979
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