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Here is another jaw. It is offered as Halisaurus and is reportedly from Oued Zem of Morocco. It is 10.2" in length. Jaws are a common inquiry here and several members are frequently kind enough to give their experienced opinion of the posted fossils. I would find it interesting and perhaps instructive to the general Forum; if experienced respondents would provide as much detail as they can as to how they formulate their opinion (e.g. common responses such as "teeth may be added," "matrix is not original, etc.") The question I am posing is how are these opinions reached? What clues are utilized? The following photos are the sellers. I realize that any conclusions reached in this section of the Forum are impacted by the quality and completeness of the provided images. Please respond to this fossil with as much "detective" detail as you care to provide. Thanks.

Hello, i am a Student from Germany. I have recieved the Task of analyzing the huge fossil Collection of my School, which includes this tooth. According to a profile (that appears to have been made by a fifth or sixt-grader), it is from Oued-Zem / Khouribgha, morocco. My best guess is that it is from Prognathodon. It is about 2,5 to 3 cm Long and 1 cm thick. Many thanks in Advance!!!

I bought this tooth as Mosasaurus hoffmanni on internet site. Size: 2,32 inch Location: Oued Zem, Morocco Formation: Ouled Abdoun Basin (Phosphate beds) Is it really hoffmanni ? or beaugei ?

Hey everyone I ordered this piece last night, it will probably arrive in the course of this week. According to the listing it is a turtle bone from the cretaceous phosphate layers of Oued Zem in Morocco, but the exact species wasn't identified. But unfortunatly I am not very familiar with Cretaceous sea turles from Morocco, I just found it a nice piece to add to my Oued Zem display. So does anyone know which turtle species can be found in the cretaceous phosphate layers of Oued Zem? The only species that came out while googling was Lytoloma elegans, but I am sure some of you might know other species that lived in Oued Zem during the Cretaceous? Thanks in advance!

Hi everyone, With this thread I wanted to start a discussion about what the feeding habits would be for most mosasaur species, how you think they would have fed. I personally love mosasaurs, they are one of my favorite prehistoric animals for a number of reasons and I’ve recently even bought my first Prognathodon jaw and I also live in an area that is not only known for their fossils but also for the discovery of mosasaurs. I’ve been doing a bit of reading lately about mosasaurs but I can’t really find anything difinitive on their feeding habits. Their diet yes. But exactly how they consumed their prey, not yet. I personally work with reptiles on a daily base, both with my job and with my hobby and I know quite a bit of different feeding behaviours with these animals. And as I was feeding the ball pythons (Python regius) at work I was kinda wondering, how would a large marine reptile like a mosasaurus eat? Would they just tear off chunks of meat like their closest living relatives the monitor lizards? Or would they perform deathroll like crocodiles do to tear of chunks of meat of their prey? Or when we talk about smaller prey, would they just swallow them whole like a snake does with it’s two lower jaws that can move independently, would a mosasaur be capable of that? Or would it be a mix of all those things or something entirely different? So I was just wondering what are your thoughts on the subject? I love to hear your theories and own finds and observations or if anyone ever read something in a scientific paper about the matter. I am dying to know your thoughts on the matter, as I want to learn as much as I can about these magnificent beasts!