Spheroolithus

Spheroolithus Temporal range: Late Cretaceous ~99.6–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Spheroolithus eggs from China
Egg fossil classification
Basic shell type:	†Dinosauroid-spherulitic
Oofamily:	†Spheroolithidae
Oogenus:	†Spheroolithus Zhao, 1979
Synonyms
Paraspheroolithus Zhao, 1979

Spheroolithus is an oogenus of dinosaur egg.

Oospecies

The following species are described:

• Paraspheroolithus sanwangbacunensis
• Paraspheroolithus yangchengensis
• Spheroolithus albertensis
• Spheroolithus choteauensis
• Spheroolithus europaeus
• Spheroolithus irenensis
• Spheroolithus jincunensis
• Spheroolithus maiasauroides
• Spheroolithus megadermus
• Spheroolithus spheroides
• Spheroolithus tenuicorticus

Distribution

Fossils of the oogenus were found in:

• Dinosaur Park and Oldman Formations, Alberta, Canada
• China
• Ohyamashimo Formation, Japan
• Cerro del Pueblo Formation (Difunta Group), Mexico
• Nemegt & Bayan Shireh Formations, Mongolia
• La Posa Formation (Tremp Group), Spain
• Two Medicine Formation, Montana and North Horn Formation, Utah, United States
• Lameta Formation, India

Gallery

• 
  Spheroolithus sp. eggs
• 
  Paraspheroolithus eggs in Henan Geological Museum

See also

• List of dinosaur oogenera

References

Bibliography

• Carpenter, K. 1999. Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction (Life of the Past). Indiana University Press, Bloomington, Indiana
• Z. Zhao. 1979. [Advances in the study of fossil dinosaur eggs in our country]. Mesozoic and Cenozoic red beds of South China; selected papers from the field conference on the South China Cretaceous-Early Tertiary red beds. Science Press, Beijing 330-340

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