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Found 37 results

  1. Hoping someone can help me determine if this is a dinosaur egg?
  2. Hello members! I recently purchased my first dinosaur egg. Could you please help me identify it's authenticity? It was sold as a Hadrosaur egg. Thank you all so much!!
  3. Every day I look through a collection of websites and online auctions for any good deals on dinosaur fossils. Occasionally a real steal of a deal is found, but when it comes to eggs most of what I see is fake. Counterfeit dinosaur eggs are continually found, mostly being sold by the same sellers from China and Malaysia. I personally fell for this trap last year and spent a lot of money on "eggs" that were man made. This is a topic that is brought up every few months on this thread to warn fellow collectors and I think its time again to repost what many others have posted before. There was a good short article that was written by Bill Merz and distributed at last year's Tucson Gem and Mineral Show where he points out some of the most common examples of mass manufactured fake eggs.
  4. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since March 10 , 2017. Eggs (Oolithids) Oolithids - Cambrian Lin, J.-P., et al. (2006). Silicified egg clusters from a Middle Cambrian Burgess Shale-type deposit, Guizhou, south China. Geology, Vol.34, Number 12. Oolithids - Permian Abu Hamad, A., et al. (2016). First Permian Occurrence of the Shark Egg Capsule Morphotype Palaeoryxis Brongniart, 1828. Journal of Vertebrate Paleontology, e1112290. Oolithids - Triassic Böttcher, R. (2010). Description of the shark egg capsule Palaeoxyris friessi n.sp. from the Ladinian (Middle Triassic) of SW Germany and discussion of all known egg capsules from the Triassic of the Germanic Basin. Palaeodiversity, 3. Fischer, J., B.J. Axsmith and S.R. Ash (2010). First unequivocal record of the hybodont shark egg capsule Palaeoxyris in the Mesozoic of North America. N.Jb.Geol.Paläont.Abh., Vol.255/3. Fischer, J., S. Voigt and M. Buchwitz (2007). First elasmobranch egg capsules from freshwater lake deposits of the Madygen Formation (Middle to Late Triassic, Kyrgyzstan, Central Asia). Freiberger Forschungshefte, C254, psf (15). Kitching, J.W. (1979). Preliminary Report on a Clutch of Six Dinosaurian Eggs from the Upper Triassic Elliot Formation, Northern Orange Free State. Palaeont.afr., 22. McLean, G. (2014). A Comparative Study of the Australian Fossil Shark Egg-Case Palaeoxyris duni, with Comments on Affinities and Structure. Proceedings of the Linnean Society of New South Wales, 136. Pott, C., et al. (2008). Fossil Insect Eggs and Ovipositional Damage on Bennettitalian Leaf Cuticles from the Carnian (Upper Triassic) of Austria. J.Paleont., 82(4). Oolithids - Jurassic Garcia, G., et al. (2006). Earliest Laurasian sauropod eggshells. Acta Palaeontologica Polonica, 51(1). Joyce, W.G. and D.K. Zelenitsky (2002). Turtle egg pseudomorphs from the Late Jurassic of Schamhaupten, Germany. Archaeopteryx, 20. Mateus, I., et al. (1998). Upper Jurassic Theropod Dinosaur embryos from Lourinhã (Portugal). Memórias da Academia Ciências de Lisboa, Vol.37. Popa, M.E. and A. Zaharia (2011). Early Jurassic Ovipositories on Bennettitalean Leaves from Romania. Acta Palaeontologica Romaniae, Vol.7. Reisz, R.R., et al. (2012). Oldest known dinosaurian nesting site and reproductive biology of the Early Jurassic sauropodomorph Massospondylus. PNAS, Early Edition. Ribeiro, V., et al. (2014). Two new theropod egg sites from the Late Jurassic Lourinhã Formation, Portugal. Historical Biology, Vol.26, Number 2. Russo, J., et al. (2017). Two new ootaxa from the late Jurassic : The oldest record of crocodylomorph eggs from the Lourinhã Formation, Portugal. PLoS ONE, 12(3). (Thanks to Fossildude19 for finding this one!) Russo, J., et al. (2014). Crocodylomorph eggs and eggshells from the Lourinhã Fm. (Upper Jurassic), Portugal. Comunicaҫões Geológicas, 101, Especial 1. Zaton, M., G. Niedzwiedzki and G. Pienkowski (2009). Gastropod Egg Capsules Preserved on Bivalve Shells from the Lower Jurassic (Hettangian) of Poland. Palaios, Vol.24. Oolithids - Cretaceous Cretaceous Oolithids - Africa/Middle East Gottfried, M.D., et al. (2004). Dinosaur Eggshell from the Red Sandstone Group of Tanzania. Journal of Vertebrate Paleontology, 24(2). Krassilov, V., et al. (2007). Insect eggs sets on angiosperm leaves from the Lower Cretaceous of Negev, Israel. Cretaceous Research, 28. Lawver, D.R., A.H. Rasoamiaramanana and I. Werneberg (2015). An Occurrence of Fossil Eggs from the Mesozoic of Madagascar and a Detailed Observation of Eggshell Microstructure. Journal of Vertebrate Paleontology, e973030. Cretaceous Oolithids - Asia/Malaysia/Pacific Islands Buffetaut, E., et al. (2005). Minute theropod eggs and embryo from the Lower Cretaceous of Thailand and the dinosaur-bird transition. Naturwissenschaften, 00, Short Communications. Huh, M., et al. (2014). First record of a complete giant theropod egg clutch from Upper Cretaceous deposits, South Korea. Historical Biology, Vol.26, Number 2. Johnston, P.A., D.A. Eberth and P.K. Anderson (1996). Alleged vertebrate eggs from Upper Cretaceous redbeds, Gobi Desert, are fossil insect (Coleoptera) pupal chambers: Fictovichnus new ichnogenus. Can.J. Earth Sci., 33. (Thanks to doushantuo for finding this one!) Lawver, D.R., et al. (2016). An Avian Egg from the Lower Cretaceous (Albian). Liangtoutang Formation of Zhejiang Province, China. Journal of Vertebrate Paleontology, e1100631. Liu, J.-Y., et al. (2013). A parataxonomic revision of spheroolithid eggs from the Upper Cretaceous Quantou Formation in Changtu, Liaoning. Vertebrata PalAsiatica, 51(4). Mikhailov, K.E. (2000). 28. Eggs and eggshells of dinosaurs and birds from the Cretaceous of Mongolia. In: The Age of Dinosaurs in Russia and Mongolia. Benton, M.J., et al. (eds.), Cambridge University Press. Paik, I.S., H.J. kim. and M. Huh (2012). Dinosaur egg deposits in the Cretaceous Gyeongsang Supergroup, Korea: Diversity and paleobiological implications. Journal of Asian Earth Sciences, unpublished manuscript. Prasad, G.V.R., et al. (2015). Testudoid and crocodiloid eggshells from the Upper Cretaceous Deccan Intertrappean Beds of Central India. C.R. Palevol, 14. Sabath, K. (1991). Upper Cretaceous Amniotic Eggs from the Gobi Desert. Acta Palaeontologica Polonica, Vol.36, Number 2. Varricchio, D.J. and D.E. Barta (2015). Revisiting Sabath's "Larger Avian Eggs" from the Gobi Cretaceous. Acta Palaeontologica Polonica, 60(1). Wang, Q., et al. (2013). New forms of dictyoolithids from the Tiantai Basin, Zhejiang Province of China and a parataxonomic revision of the dictyoolithids. Vertebrata PalAsiatica, 51(1). Wang, Q., et al. (2013). New turtle egg fossil from the Upper Cretaceous of the Laiyang Basin, Shandong Province, China. Annals of the Brazilian Academy of Sciences, 85(1). Wang, Q., et al. (2011). New Ootypes of Dinosaur Eggs from the Late Cretaceous in Tiantai Basin, Zhejiang Province, China. Vertebrata PalAsiatica, 49(4). Wang, Q., et al. (2010). A New Oogenus of Elongatoolithidae from the Upper Cretaceous Chichengshan Formation of Tiantai Basin, Zhejiang Province. Vertebrata PalAsiatica, 48(2). Wang, X.-l., et al. (2012). Dinosaur Egg Faunas of the Upper Cretaceous Terrestrial Red Beds of China and Their Stratigraphical Significance. Journal of Stratigraphy, Vol.36, Number 2. Zhang, S.-K. (2010). A Parataxonomic Revision of the Cretaceous Faveoloolithid Eggs of China. Vertebrata PalAsiatica, 48(3). Zhang, S.K. and Q. Wang (2010). A New Oospecies of Ovaloolithids from Turpan Basin in Xinjiang, China. Vertebrata PalAsiatica, 48(1). Zhao, H. and Z.-K. Zhou (1999). A New Form of Elongatoolithid Dinosaur Eggs from the Lower Cretaceous Shahai Formation of Heishan, Liaoning Province. Vertebrata PalAsiatica, 37(4). Zhou, H. and Z.-K. Zhou (1998). Dinosaur Eggs from Xichuan Basin, China. Vertebrata PalAsiatica, 36(4). Zhou, Z. and Z.-C. Li (1988). A New Structural Type of Dinosaur Eggs from Anlu County, Hubei Province. Vertebrata PalAsiatica,26(2). Zou, S.-L., Q. Wang and X.-L. Wang (2013). A new oospecies of parafaveoolithids from the Pingxiang Basin, Jiangxi Province, of China. Vertebrata PalAsiatica, 51(2). Cretaceous Oolithids - Europe (including Greenland and Siberia) Botfalvai, G., et al. (2017). Taphonomical and palaeoecological investigation of the Late Cretaceous (Maastrichtian) Tustea vertebrate assemblage (Romania, Hateg Basin) - insights into a unique dinosaur nesting locality. Palaeogeography, Palaeoclimatology, Palaeoecology, 268. Grellet-Tinner, G., et al. (2012). First Record of Reproductive Adaptation to "Island Effect" of a Dwarf Cretaceous Romanian Titanosaur, with Embryonic Integument In Ovo. PLoS One, 7(3). Grigorescu, D. (2016). The 'Tustea puzzle' revisited: Late Cretaceous (Maastrichtian) Megaloolithus eggs associated with Telmatosaurus hatchlings in the Hateg Basin. Historical Biology. Grigorescu, D. and Z. Csiki (2008). A New Site with Megaloolithid Egg Remains in the Maastrichtian of the Haṭeg Basin. Acta Palaeontologica Romaniae, v.6. Kohring, R. (1991). Lizard Egg Shells from the Lower Cretaceous of Cuenca Province, Spain. Palaeontology, Vol.34, Part 1. López-Martínez, N. (2000). Eggshell Sites from the Cretaceous-Tertiary Transition in South-Central Pyrenees (Spain). First International Symposium on Dinosaur Eggs and Babies, Extended Abstracts. Moreno-Azanza, M., J.I. Canudo and J.M. Gasca (2014). Spheroolithid eggshells in the Lower Cretaceous of Europe. Implications for eggshell evolution in ornithischian dinosaurs. Cretaceous Research, 51. Moreno-Azanza, M., J.I. Canudo and J.M. Gasca (2014). Unusual theropod eggshells from the Early Cretaceous Blessa Formation of the Iberian Range, Spain. Acta Palaeontologica Polonica, 59(4). Moreno-Azanza, M., et al. (2014). A re-evaluation of aff. Megaloolithidae eggshell fragments from the uppermost Cretaceous of the Pyrenees and implications for crocodylomorph eggshell structure. Historical Biology, Vol.26, Number 2. Sellés, A.G. (2012). Oological Record of Dinosaurs in South Central Pyrenees (SW Europe): Parataxonomy, Diversity and Biostratigraphical Implications. Ph.D. Thesis - Universitat de Barcelona. Zaton, M. and A.A. Mironenko (2015). Gastropod egg capsules preserved on an Early Cretaceous ammonite from Daghestan, Russia. Cretaceous Research, 55. Zaton, M., A.A. Mironenko and K. Banasik (2017). Gastropod egg capsules from the Lower Cretaceous of Russia preserved by calcitation. Palaeogeography, Palaeoclimatology, Palaeoecology, 466. Zaton, M., P.D. Taylor and J.W.M. Jagt (2013). Late Cretaceous gastropod egg capsules from the Netherlands preserved by bioimmuration. Acta Palaeontologica Polonica, 58(2). Cretaceous Oolithids - North America Horner, J.R. (1999). Egg Clutches and Embryos of Two Hadrosaurian Dinosaurs. Journal of Vertebrate Paleontology, 19(4). Lawver, D.R, and F.D. Jackson (2016). An accumulation of turtle eggs with embryos from the Campanian (Upper Cretaceous) Judith River Formation of Montana. Cretaceous Research, accepted manuscript. Varricchio, D.J. and F.D. Jackson (2004). A Phylogenetic Assessment of Prismatic Dinosaur Eggs from the Cretaceous Two Medicine Formation of Montana. Journal of Vertebrate Paleontology, 24(4). Varricchio, D.J., J.R. Horner and F.D. Jackson (2002). Embryos and Eggs for the Cretaceous Theropod Dinosaur Troodon formosus. Journal of Vertebrate Paleontology, 22(3). Zelenitsky, D.K. and F. Therrien (2008). Unique Maniraptoran Egg Clutch from the Upper Cretaceous Two Medicine Formation of Montana Reveals Theropod Nesting Behaviour. Palaeontology, Vol.51, Part 6. Zelenitsky, D.K., et al. (2008). First fossil gravid turtle provides insight into the evolution of reproductive traits in turtles. Biol. Lett., 4. Cretaceous Oolithids - South America/Central America/Caribblean Fernández, M.S., et al. (2013). A Large Accumulation of Avian Eggs from the Late Cretaceous of Patagonia (Argentina) Reveals a Novel Nesting Strategy in Mesozoic Birds. PLoS ONE, 8(4). Grellet-Tinner, G. and H. Zaher (2007). Taxonomic Identification of the Megaloolothid Egg and Eggshells from the Cretaceous Bauru Basin (Minas Gerais, Brazil): Comparison With the Auca Mahuevo (Argentina) Titanosaurid Eggs. Papeis Avulsos de Zoologica, Vol.47(7). Grellet-Tinner, G., et al. (2014). The first pterosaur 3-D egg: Implications for Pterodaustro guinazui nesting strategies, an Albian filter feeder pterosaur from central Argentina. Geoscience Frontiers, 5. Hechenleitner, E.M., et al. (2016). A New Upper Cretaceous Titanosaur Nesting Site from La Rioja (NW Argentina), With Implications for Titanosaur Nesting Strategies. Palaeontology. Hechenleitner, E.M., et al. (2016). Micro-CT scan reveals an unexpected high-volume and interconnected pore network in a Cretaceous Sanagasta dinosaur eggshell. J.R.Soc. Interface, 13:20160008. Marsola, J.C. de A.,. et al. (2016). Palaeoenvironmental characterization of a crocodilian nesting site from the Late Cretaceous of Brazil and the evolution of crocodyliform nesting strategies. Palaeogeography, Palaeoclimatology, Palaeoecology, 457. Marsola, J.C. de A., et al. (2014). The first Pan-Podocnemididae turtle egg from the Presidente Prudente Formation (Late Cretaceous, Bauru Group), Brazil. Zootaxa, 3872(2). Marsola, J.C. de A., et al. (2014). The first fossil avian egg from Brazil. Alcheringa, 38, xxx-xxx. Oliveira, C.E.M., et al. (2011). Crocodylomorph Eggs and Eggshells from the Adamantina Formation (Bauru Group), Upper Cretaceous of Brazil. Palaeontology, Vol.54, Part 2. Salgado, L., et al. (2007). Upper Cretaceous dinosaur nesting sites of Rio N*gro (Salitral Ojo de Agua and Salinas de Trapalco-Salitral de Santa Rosa), northern Patagonia, Argentina. Cretaceous Research, 28. Schweitzer, M.H., et al. (2002). Late Cretaceous Avian Eggs With Embryos From Argentina. Journal of Vertebrate Paleontology, 22(1). General Cretaceous Oolithids Balanoff, A.M., et al. (2008). Digital preparation of a probable neoceratopsian preserved within an egg, with comments on microstructural anatomy of ornithischian egg shells. Naturwissenschaften, 95. Jackson, F.D. and J.G. Schmitt (2008). Recognition of vertebrate egg abnormalities in the Upper Cretaceous fossil record. Cretaceous Research, 29. Panades I Blas, X. (2005). Diversity versus variability in Megaloolithid dinosaur eggshells. PalArch, 2, 1. Sander, P.M., et al. (2008). Upper Cretaceous titanosaur nesting sites and their implications for sauropod dinosaur reproductive biology. Palaeontographica Abt. A, 284. Zelenitsky, D.K. and F. Therrien (2008). Phylogenetic Analysis of Reproductive Traits of Maniraptoran Theropods and Its Implications for Egg Parataxonomy. Palaeontology, Vol.51, Part 4. Oolithids - Paleocene Angst, D., et al. (2015). Diet and climatic context of giant birds inferred from δ13Cc and δ18Oc values of Late Palaeocene and Early Eocene eggshells from southern France. Palaeogeography, Palaeoclimatology, Palaeoecology, 435. Donaire, M. and N. López-Martínez (2009). Porosity of Late Paleocene Ornitholithus eggshells (Tremp Fm., south-central Pyrenees, Spain): Paleoclimatic implications. Palaeogeography, Palaeoclimatology, Palaeoecology, 279. Oolithids - Eocene Hastings, A.K. and M. Hellmund (2015). Rare In Situ Preservation of Adult Crocodylian With Eggs from the Middle Eocene of Geiseltal, Germany. Palaios, Vol.30. Kiel, S., J. Peckmann and K. Simon (2013). Catshark egg capsules from a Late Eocene deep-water methane-seep deposit in western Washington State, USA. Acta Palaeontologica Polonica, 58(1). Sellick, J.T.C. (1994). Phasmida (Stick Insect) Eggs from the Eocene of Oregon. Palaeontology, Vol.37, Part 4. Oolithids - Miocene Bibi, F., et al. (2006). New Fossil Ratite (Aves: Paleognathae) Eggshell Discoveries from the Late Miocene Baynunah Formation of the United Arab Emirates, Arabian Peninsula. Palaeontologia Electronica, Vol.9, Issue 1. Blas, X.P.I. and R. Patnaik (2009). A Complete Crocodylian Egg from the Upper Miocene (Chinji Beds) of Pakistan and its Palaeobiographical Implications. PalArch's Journal of Vertebrate Palaeontology, 6(1). Grellet-Tinner, G., et al. (2012). The First Occurrence in the Fossil Record of an Aquatic Avian Twig-Nest with Phoenicopteriformes Eggs: Evolutionary Implications. PLoS ONE, 7(10). Oolithids - Pliocene Harrison, T. (2005). Fossil bird eggs from the Pliocene of Laetoli, Tanzania: Their taxonomic and paleoecological relationships. Journal of African Earth Sciences, 41. Kuhn, B.F., et al. (2015). Identification of fossilized eggshells from the Taung hominin locality, Taung, Northwest Province, South Africa. Palaeontologia Electronica, 18.1.11A. Mueller-Töwe, I.J., et al. (2011). First chelonian eggs and carapace fragments from the Pliocene of Rhodes, Greece. N.Jb.Geol.Palaönt.Abh., 262/3. Oolithids - Pleistocene Bradbury, W.C. (1919). Some Notes on the Egg of Aepyornis maximus. 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Cracking a Developmental Constraint: Egg Size and Bird Evolution. Records of the Australian Museum, Vol.62. Horner, J.R. (2000). Dinosaur Reproduction and Parenting. Anna.Rev. Earth Planet.Sci. 2000, 28. Lawver, D.R., A.H. Rasoamiaramanana and I. Werneburg (2015). An Occurrence of Fossil Eggs from the Mesozoic of Madagascar and a Detailed Observation of Eggshell Microstructure. Journal of Vertebrate Paleontology, e973030. Mikhailov, K.E. (1997). Fossil and recent eggshell in amniotic vertebrates: Fine structure, comparative morphology and classification. Special Papers in Palaeontology, Number 56. Mikhailov, K.E. (1991). Classification of Fossil Eggshells of Amniotic Vertebrates. Palaeontologica, Vol.36, Number 2. Mikhailov, K.E., E.S. Bray and K.F. Hirsch (1996). Parataxonomy of Fossil Egg Remains (Veterovata): Principles and Applications. Journal of Vertebrate Paleontology, 16(4). Senut, B. and M. Pickford (1995). Fossil Eggs and Cenozoic Continental Biostratigraphy of Namibia. 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Scale insect larvae preserved in vertebrate coprolites (Le Quesnoy, France, Lower Eocene): paleoecological insights. Sci.Nat., 103: 85. Coprolites - Miocene Godfrey, S.J. and J.B. Smith (2010). Shark-bitten vertebrate coprolites from the Miocene of Maryland. Naturwissenschaften, 97. Pesquero, M.D., et al. (2014). Calcium phosphate preservation of faecal bacteria negative moulds in hyaena coprolites. Acta Palaeontologica Polonica, 59(4). Sharma, K.M. and R. Patnaik (2010). Coprolites from the lower Miocene Baripada beds of Orissa. Current Science, Vol.99, Number 6. Coprolites - Pliocene Harrison, T. (2011). Chapter 14. Coprolites: Taphonomic and Paleoecological Implications. In: Paleontology and Geology of Laetoli: Human Evolution in Context. Volume 1: Geology, Geochronolgy, Paleoecology and Paleoenvironment. Harrison, T. (ed.), Vertebrate Paleobiology and Paleoanthropology, Springer Science + Business Media B.V. Hunt, A.P., S.G. Lucas and A.J. Lichtig (2015). 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New Mexico Museum of Natural History and Science, Bulletin 60. Hunt, A.P. and S.G. Lucas (2012). Classification of Vertebrate Coprolites and Related Trace Fossils. In: Vertebrate Coprolites. Hunt, et al. (eds.), New Mexico Museum of Natural History and Science, Bulletin 57. Hunt, A.P. and S.G. Lucas (2012). Descriptive Terminology of Coprolites and Recent Feces. In: Vertebrate Coprolites. Hunt, et al. (eds). New Mexico Museum of Natural History and Science, Bulletin 57. Hunt, A.P. and S.G. Lucas (2012). A Bromalite Collection at the National Museum of Natural History (Smithsonian Institution), With Descriptions of New Ichnotaxa and Notes on Other Significant Coprolite Collections. In: Vertebrate Coprolites. Hunt, et al. (eds.) New Mexico Museum of Natural History and Science, Bulletin 57. Hunt, A.P., et al. (2012). Vertebrate Coprolite Studies: Status and Prospectus. In: Vertebrate Coprolites. Hunt, et al. (eds.), New Mexico Museum of Natural History and Science, Bulletin 57. Hunt, A.P., et al. (2012). Vertebrate Coprolites and Other Bromalites in National Park Service Areas. In: Vertebrate Coprolites. Hunt, et al. (eds.), New Mexico Museum of Natural History and Science, Bulletin 57. Johnson, K.L., et al. (2008). A Tick from a Prehistoric Arizona Coprolite. The Journal of Parasitology, Vol.94, Number 1. Kulkarni, K.G. and R. Panchang (2015). New Insights into Polychaete Traces and Fecal Pellets: Another Complex Ichnotaxon? PLoS ONE, 10(10). (Thanks to doushantuo for finding this one!) McAllister, J.A. (1985). Reevaluation of the Formation of Spiral Coprolites. The University of Kansas Paleontological Contributions, Paper 114. Rawlence, N.J., et al. (2016). Dietary interpretations for extinct megafauna using coprolites, intestinal contents and stable isotopes: Complementary or contradictory? Quaternary Science Reviews, 142. Reinhard, K.J. and V.M. Bryant (1992). Coprolite Analysis: A Biological Perspective on Archaeology. Papers in Natural Resources, Paper 46. Scott, L., et al. (2003). Preservation and interpretation of pollen in hyaena coprolites: taphonomic observations from Spain and southern Africa. Palaeont. afr., 39. Williams, M.E. (1972). The Origin of "Spiral Coprolites". The University of Kansas Paleontological Contributions, Paper 59. Wings, O. (2012). Gastroliths in Coprolites - A Call to Search. In: Vertebrate Coprolites. Hunt, et al. (eds.), New Mexico Museum of Natural History and Science, Bulletin 57. Wood, J.R. and J.M. Wilmshurst (2016). A protocol for subsampling Late Quaternary coprolites for multi-proxy analysis. Quaternary Science Reviews, 138. Wood, J.R., et al. (2013). Resolving lost herbivore community structure using coprolites of four sympatric moa species (Aves: Dinornithiformes). PNAS, Early Edition. Wood, J.R., et al. (2012). High-Resolution Coproecology: Using Coprolites to Reconstruct the Habits and Habitats of New Zealand's Extinct Upland Moa (Megalapteryx didinus). PLoS ONE, 7(6).
  5. Eu vi esse fóssil ovo de dinossauro, e eu estou querendo saber se é real. Por favor, eu gostaria que seus pensamentos sobre este assunto! Obrigado a todos que pode me ajudar!
  6. Whole dinosaur eggs are highly sought-after fossils. The ones usually available to collectors are Hadrosaur eggs, Oviraptor eggs and Segnosaur eggs from China. This thread deals specifically with hadrosaur eggs. Hadrosaur eggs (Dendroolithus sp.) as we know from the market are in fact various dinosaur species, often hadrosaurid (many collectors/dealers lack the tools or discipline to examine eggshells under microscopes or have accredited museums examine them). Commercially available eggs vary greatly in price, anything from 150 USD to 1,500 USD depending on quality, size, hatched/unhatched and prep work. They usually range from 3.5 inches to 7 inches in diameter, and are mostly hatched types (which means the egg is in fact empty. If you prep out the bottom matrix, chances are it's hollow). However, hadrosaur eggs are also one of the most commonly faked, or mistaken fossils in the world. Anything from pieces of rock, pebbles, septarian nodules, concretions, or even chemically-etched objects are sold as eggs. There are several online right now. Here are examples of false hadrosaur eggs we often see in the market. Here are examples of partial/composite hadrosaur eggs (Note these ones are real to an extent. They can be a more economical choice as long as you know what you are getting).
  7. Found these online. I suspect they're fakes. Beware. Not surprising if they are fake, besides, they're from China. (not saying that all fossils being sold from China are fake.)
  8. Some of you may know me to be an avid dinosaur-egg collector. Sadly, most eggs these days come only from China or European countries. Recently, I was lucky enough to acquire a North American dinosaur egg - A Maiasaura peeblesorum egg from Browning, Montana. This hatched egg dates to the late Cretaceous, and is inflated unlike other eggs from that area. Maiasaura is the very picture of motherly dinosaurs and nesting behavior; this egg is thus one of my favorite fossils.
  9. Hello fellow dinosaur enthusiasts! I'm currently bidding on a what they say is an Segnosaurus egg on a website. I contacted the person and she said he bought it years ago also on a website. Now is the thing she doesn't have an proof of authentication and if I look around the internet all the other Segnosaurus eggs have more smooth shells. But this might be that it was found in a different type of soil. According to her the egg was found in Xixia, China. I hope one of you guys can shed a light on this if this is an authentic egg or not.
  10. I think I discovered what looks like a fossilized egg. I have included a few pics, hope they help with an ID! Thanks in advance
  11. hi guys i love to hunt fossils and minerals, found this peculiar egg? help identify, if you need more info or pics, thanks
  12. Egg came from China (unfortunately I don't have a specific area). It came from the Cretaceous time period. Dimensions (Length x Width x height) The fossil is 12cm (~5in) x 10cm (~4in) x 10cm and weighs 2.5kg. I'm not sure what kind of species this came from however I'm curious if anyone can tell me from the pictures. Either way I'm glad I have a fossil egg of some kind even though I may not know what species it is. (I'm also I little worried that it may not be an egg at all as people do mistake fossil eggs quite commonly. However I can get a full refund so no worries).
  13. From the album Dinosaur Eggs

    A Segnosaur egg from Henan Province of China - one of the finest egg in my collection
  14. From the album Dinosaur Eggs

    A partial sauropod egg from Djadokhta formation of the Gobi Desert, prepped by Mike Holmes
  15. From the album Dinosaur Eggs

    71 - 66 mya, Nanxiong Formation, Guangdong Province, China, 8.78 inches, (Note: Has composited eggshells)
  16. I just acquired what looks to be a very unusual egg. This single egg comes detached from a clutch of upright eggs in an antique shop in Singapore; owner would not reveal where it origins from. The egg is white, and covered in reddish-sand matrix that can be scrapped off with a needle. This egg measures 7.66 cm long (I lack measurement of the nest, owner wouldn't let me take more pics). My first thought were that these are Troodon eggs, as "upright eggs" are a characteristic of troodon eggs as far as I know. 1) Thomas(Tom) Kapitany said these looks like it came from China. He didn't personally give it an ID, but mentioned he had seen these identified as Protoceratops before. 2) Seth Sorenson said there's no way to confirm it as Troodon without skeletal material, but he said they look like small ceratopsian eggs to him. He also mentioned Protoceratops eggs have been found in standing clutches before. 3) Laogao, a fossil egg expert from China said this looks like Troodon eggs from Henan. 4) Dr. Kenneth Carpenter said these are most likely theropod eggs of the Elongatoolithus(egg oogenera) family. Without microscopic examination or confirmation of their origin, he could not give any further identification though. With such little information, I am aware there's no way to give a definitive ID of the dinosaur that laid these eggs. I'd still like to ask for your opinions though on what you believe this egg might be.
  17. From the album Dinosaur Eggs

    My Lowell-prepped Oviraptor egg. Crushed but still lovable!
  18. From the album Dinosaur Eggs

    A mysterious dinosaur egg from the late Cretaceous of China. Supposedly a small hadrosaurid, but still lacking a proper ID.
  19. From the album Dinosaur Eggs

    A very rare partial Titanosaur egg from Allen Formation, Rio ######, Argentina
  20. From the album Dinosaur Eggs

    A pair of Titanosaur egg partials from Auca Mahuevo of Patagonia - an area known for yielding many prized egg remains
  21. I saw a clutch of eggs today in a local flea market and took a look at it and saw quite an interesting texture on it. I have seen pictures and handled a few Hadrosaur eggs before, and I am not familiar with this kind of texture and feel and so I took a few photos to share to ask some egg experts here if this is common for a Hadrosaur Egg to look like this? Or is the specimen possibly a fake? Here are the pictures of the specimen:
  22. A gentleman gave me this object and claimed it was a dinosaur egg fossil he found on his property in TN. It doesn't appear to be any type of geode I have ever seen, but i'm unsure if it is in fact a dino egg.
  23. From the album My Cabinet of Curiosity & Geological Art

    Assorted dinosaur eggs and proboscidean fossils collection
  24. From the album Dinosaur Fossils collection

    Assorted collection of different types of dinosaur egg fossils from Asia
  25. From the album Dinosaur Fossils collection

    Segnosaur Egg fossil (Spheroolithus Egg) Locality: Nanchao Formation, Nanyang Valley, Henan Province, China Geological Age: Late Cretaceous (68 MYA)