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Found 2 results

  1. Finally...... Jurassic Sharks !!

    I have not been very active with Fossils on Wheels lately. I took some time off and have been just doing family stuff and working. We did manage to start working on improving our shark education programs though and the first area I wanted to address was our total lack of Jurassic era sharks. We are splitting the 4th grade adaptations into 2 one hour long presentations which allows us to get into some deeper science and introduce more sharks. The big gaping hole was in the Jurassic so I searched pretty hard to find some interesting teeth to add. The first picture is two nice Asteracanthus magnus teeth we picked up. I thought this was a great addition for us. I believe this was one of the larger sharks of that time and the teeth are another example of crushing teeth. I was super happy to add some Cretorectolobrus teeth from the UK. This gives us a chance to point out a modern shark family and introduce the kids to Carpet sharks which become a prominent part of the second presentation. I am pretty excited to see the artwork my son comes up with for these small sharks. Not pictured (the camera on my phone is broken and I am too lazy to get out my Canon), a Sphenodus tooth from Russia. I do not believe these are considered a Cow Shark but they in the order Hexanchiformes so we can at least place the order on the timeline in the Jurassic. Important for us because there is absolutely no way we are finding a Jurassic Cow shark tooth lol It also gives us a chance to talk about deepwater sharks and the adaptations they have. Also not pictured and not in hand yet, are two more additions that put modern shark on the timeline. We are getting a Paracestraction tooth which puts Bullheads on the board and a Spathobatis tooth which will be our earliest representative of the rays. We went from zero Jurassic species to 5 which is as far as we will get for now but I am really happy about these additions. They will really help give us a much more complete program and we can introduce some modern shark orders/families pretty early on in the program.
  2. We have wrapped up our shark adaptation programs for this season. We still have at least 5 dinosaur programs left, possibly up to 9 but sharks are done for the spring. We have an abundance of shark adaptations that we covered in these 1 hour long presentations but I am ambitious. Next school year, we are splitting the program and offering a much more comprehensive two part program. We can really deep dive on the shark science and work in more sharks. I am in the process of slowly adding some things to improve the program. We picked up a pretty little Caseodus tooth, some Orthacanthus playpternus teeth and Lissodus selachos tooth. I think we have found a Venustodus tooth and will finally be adding a Hybodus spine (fingers crossed). I am quite happy with the Carboniferous and Cretaceous shark material we have. We are well covered in the Miocene as well. There is a big hole though and I have decided to open this up to TFF members for suggestions. We have only a few tiny Hybodont teeth to cover the Triassic and Jurassic sharks. Splitting the program essentially means we would end the first program at the end of the Jurassic leaving the awesome Cretaceous sharks and the giants of the Miocene for the second program. The kids have loved the early sharks but I need to bolster the post Permian extinction sharks. Though mostly small sharks, these sharks are really important. There survival allowed modern sharks to develop. I want to present enough species not to just fill in space but to draw a far more complete picture of what sharks survived the Permian and how they did it. I know options are limited but we can do better than 3 small Hybodont teeth. We do explain the Xenacanthids survived the Great Dying but they disappear relatively quickly after it. This is where we need your help. What Triassic and Jurassic sharks can we and should we add? I figure we need an additional 5-6 sharks to cover. We do not need many but we do need to expand on this par tof the program so give us suggestions or thoughts if you know your sharks from this time. We love the ideas we get from our knowledgeable friends here. You have helped us craft thes eprograms and make them better so let's do that again lol
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