JeannieBee Posted July 24, 2021 Share Posted July 24, 2021 Hello, all! We recently acquired a shark jaw and are very curious about what kind it might be. I am a teacher and plan to display it in my classroom. I'd like to take my students through an inquiry process to determine the type but would love to know ahead of time, so I can prepare the most fruitful guiding questions. Your expertise and guidance is greatly appreciated. It is 18" wide and as positioned, 11" from top to bottom. Thank You! Link to comment Share on other sites More sharing options...
ThePhysicist Posted July 24, 2021 Share Posted July 24, 2021 Hello and welcome! This is a shortfin mako jaw (Isurus oxyrinchus). 1 "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
Coco Posted July 24, 2021 Share Posted July 24, 2021 Jaw is upside down on the last photo Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
ThePhysicist Posted July 24, 2021 Share Posted July 24, 2021 4 hours ago, Coco said: Jaw is upside down on the last photo Coco No, you can see the smaller intermediate teeth are up top where they're supposed to be. "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
Coco Posted July 25, 2021 Share Posted July 25, 2021 Hi, You are right ! I think I was wrong because the top of the jaw tilts forward, and it changes the overall picture... Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
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