Unauthenticated Dinosaur Egg Fossil Cluster, North America, Southeastern region of the United States Believed to be Cretaceous period The general shape and appearance of Dinosaur egg fossils, of an unknown period or species. Appears to have a thin layer of residual matrix on the shell. However; this can also occur in geologic concretions or chert nodules found in limestone deposits. More specific information as to it's collection information, exactly where it was found, and in what surrounding matrix will assist in identifying age and if the specimen is geologic or biologic in development. Full example is 8" x 10", unknown weight. “The Fossil Forum” is open to research and asking questions on fossils; the link will open to their dinosaur egg guide. While posing a question on the form is open to all responses; many are well researched and provide additional peer reviewed articles. http://www.thefossilforum.com/index.php?/topic/92371-advanced-dinosaur-egg-guide/ In person authentication, age, and origin will affect the possible value of these specimens. Researching current auction price results of Dinosaur Egg Fossils; the expected fair market value would be in the range of 175 to 450 USD. With an in-person authentication to verify the specimens: a FMV of 450 to 750 USD could be achieved. It is important to recognize local, state, and US federal laws and prohibitions of sale and shipment of Fossils and Paleontology items. Hi, David, I am sorry about my delayed response- I had difficulty loading your request on my computer (my error). Please, was this something you excavated? And, what was the general location or from where did you purchase the example? Answers to these questions may change the FMV assessment I have made. Thank you, Amber