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Showing results for tags 'lourhina formation'.
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Possible Lourinha Portugal Marshosaurus-like Megalosaurid Tooth
Kikokuryu posted a topic in Fossil ID
I recently purchased a Theropoda indet. tooth from the Lourinhã Formation of Lourinhã, Portugal. I wasn't expecting much initially since it looked like an incomplete tooth and the seller tends to go the safe route with their IDs if it's too vague. But, the serration count was similar to that of the Marshosaurus-like megalosaurid teeth based on @Troodon's guide on the dinosaurs of Portugal. Maybe it's just wishful thinking, but I wanted to see if anyone else had some input before I slap that good old theropoda indet. label on the display. The distal serrations is split down the middle. Mesial serrations were kind of hard to count, but they are at least 20/5mm, the distal serrations are 16/5mm. Not sure if the split serrations are messing with the count, but it should be around that 16/5mm after counting it multiple times with various pictures. I don't know how much further the tooth would have gone had it been complete, but I think the mesial serrations do appear to end before reaching the base. Although I don't know if those serration densities still overlap with other theropods like Allosaurus. Split distal serrations and shape of the base which could be slightly off due to the split serration. Distal serrations. Mesial serrations. Mesial serrations ending? Close up on denticle shape on distal side.- 7 replies
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Some cool Jurassic Dino teeth that are not Morrison Formation
fossilsonwheels posted a topic in General Fossil Discussion
I’ve been slowly working on improving our Jurassic dinosaur fossil collection. One of the major goals has been expanding beyond North America and the Morrison Formation. We recently picked up two fossils that accomplish that goal. Up first we we have a pretty nice sauropod tooth from Madagascar. This is from what is usually referred to as the Isalo III Formation. I believe the Sakahara formation would be the more accurate name given this comes from Andronomamy. This tooth is kind of interesting. It matches the Eusauropoda morphology of a paper published on sauropod teeth from Madagascar. I researched this a bit further to see if I could maybe get it to a family level. This tooth seemed be close to the morphology of the French sauropod Vouivria, which is a basal Brachiosaurid. Based on what I read, Vouivria was described from material that had been assigned to Lapparentosaurus which is what I thought this tooth might be except it doesn’t match the morphology of the Brachiosaurid/Titanosauriformes teeth in the paper. After my brain imploded from trying to figure this out, I decided to just say we have a nice Eusauropoda tooth from Madagascar lol- 8 replies
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- allosaurid
- eusauropoda
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