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Showing results for tags 'saurolophus'.
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Hello all, I have a question wrt age of the eggs, and to know which genus and oogenus this might be. Before, here, I had posted a lot of photos and a video but somehow they are mostly gone, so I will repost the video. What I have from the seller Hadrosauridae family, possibly Saurolophus genus Possibly Dendroolithus oogenus 80 mio. year old, Cenomanian, Late Cretaceous Egg size 10.5 to 12cm (4 to 4.5"), about 8-9kg (18lbs) Xixia Basin, Henan province, China Now come the contradictions of the above given data Hadrosauridae: 86–66 Ma (mio. years ago) --> Santonian-Maastrichtian (2) Saurolophus: 70–66 Ma --> Maastrichtian (3) "80 mio. year old" --> Campanian "Cenomanian" <-- 100.5-93.9 Ma Dendroolithus: 99–66 Ma --> complete Late Cretaceous (1,4) Most websites state those kind of eggs are from 80-70 or 84-71 Ma --> Santonian-Maastrichtian (1,5,6,7) On an online auction site, I found 70-65 Ma --> Maastrichtian (8) ScienceDirect states Dendroolithus oogenus from Xixia Basin are 96-83 Ma --> Cenomanian-Santonian (9) Could potentially be from Gaogou Formation, Majiacun Formation, or Sigou Formation (10,11,12) (https://en.wikipedia.org/wiki/Late_Cretaceous) So, all this does not fit together really well, does it? As Hadrosauridae lived during Santonian-Maastrichtian, 86–66 Ma, everything older should be ruled out, correct? Thus, if ScienceDirect is right, we should be within 86-83 Ma, which is Santonian. If so, most websites (5,6,7,8 & of my seller) are wrong, plus, it ain't be Saurolophus. ==} Can anyone explain this? References https://digsfossils.com/fossils/china_eggs.html https://en.wikipedia.org/wiki/Hadrosauridae https://en.wikipedia.org/wiki/Saurolophus https://en.wikipedia.org/wiki/Dendroolithus http://www.online fossil retailer.com/Stonerelic/vertebrates/EH015/EH015.htm https://www.jurassic-dreams.com/products/30116-huge-and-nicely-preserved-hadrosaurus-egg-in-matrix-kaoguo-fm-cretaceous-china-fossil-for-sale https://www.buriedtreasurefossils.com/hadrosaur-egg.html https://www.online auction site.com/zh-Hant/l/28862073-nest-of-10-hadrosaur-eggs-plus-3-imprints-all-original-no-restoration-69-x-44-cm https://www.sciencedirect.com/science/article/pii/S1002007109002949?via%3Dihub https://en.wikipedia.org/wiki/Gaogou_Formation https://en.wikipedia.org/wiki/Majiacun_Formation https://en.wikipedia.org/wiki/Sigou_Formation Update 1: video doesn't play any more in the browser. Will upload photos and fix the video.
- 11 replies
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- dendroolithus
- hadrosauridae
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We all know that Magnapaulia was the biggest lambeosaurine hadrosaur that ever lived, but did you know that Kritosaurus means "broken lizard" due to the original specimen being found with broken nasal bones? Did you also know that the name Charonosaurus highlights the fact that it was found near a river by paying homage to the role of Charon in ferrying souls to the underworld along the Styx River? Also note that the name Hypacrosaurus means "under the top lizard" because Barnum Brown considered Hypacrosaurus to be almost the size of T. rex.
- 9 replies
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- 2
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- brachylophosaurus
- charonosaurus
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