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Showing results for tags 'triassic'.
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From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Ginkgoites denmarkensis complex (sensu Holmes et Anderson 2007)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Ginkgoites denmarkensis complex (sensu Holmes et Anderson 2007)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Cladophlebis sp. with unidentified pollen organ (?)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Dicroidium odontopteroides complex (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Dicroidium odontopteroides complex (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Lepidopteris stormbergensis complex (?) (sensu Holmes et Anderson 2005b)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Dicroidium zuberi complex (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Dicroidium zuberi complex (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Sphenobaiera stormbergensis complex (sensu Holmes et Anderson 2007)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Dicroidium dubium complex (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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Kurtziana cacheutensis complex (sensu Holmes et Anderson 2005b)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
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First off: happy new year, everyone! Blezingeria ichthyospondylus is an enigmatic marine reptile from the Ladinian-stage Triassic, Upper Muschelkalk of Baden-Württemberg in southwestern Germany, first discovered in Crailsheim. Although various material has been referred to the species through time, its affiliation remains unclear. Initially described as nothosaurian and later as cymbospondylid ichthyosaurian, it has most recently been classed as thalattosaurian. Fossilworks, however, still defines it as cymbospondylid, whereas Muschelkalk.eu classifies it as an Eosuchian. Below is an overview of some of the material that has been attributed to the species: Source: Wikipedia Vertebrae & humerus. Source: Wikimedia Commons Source: Muschelkalkmuseum Ingelfingen Vertebrae & scapula. Source: Muschelkalk.eu As you can see, the vertebrae are amphicoelous, just like those of ichthyosaurians. Though, contrary to in ichthyosaurs, the neural arch in B. ichthyospondylus is attached to the vertebral body. Scapulae and pubis bones are also highly reminiscent of those found in ichthyosaurs. All this, of course, is not to say that there were no other early marine reptiles with amphicoelous vertebrae - such as those of Placodus gigas figured below, for example: Sources: online vendor & figure 13 from Diedrich, 2013. Review of the Middle Jurassic "sea cow" Placodus gigas (Reptilia) in Pangea's shallow marine macroalgae meadows of Europe At the same time, and in the same area, true ichthyosaurs were also already around, and already had characteristic their amphicoelous vertebrae free of neural arch, including such species as Cymbospondylus sp., Phantomosaurus sp. - which, according to Fossilworks, are sister taxa to B. ichthyospondylus - and, possibly, Pessosaurus sp., to which the below Middle Triassic vertebra has tentatively been ascribed: Source: Muschelkalkmuseum Ingelfingen The most comprehensive overview of Blezingeria ichthyospondylus material, however, comes from Diedrich, 2015. The vertebrates from the Lower Ladinian (Middle Triassic) bonebed of Lamerden (Germany) as palaeoenvironment indicators in the Germanic Basin (figure 9): Looking at the above image, the similarities with ichthyosaur skeletal material is indeed no longer obvious, which is reflected in the reconstruction, though there are still similarities to be found in the bone morphology of B. ichthyospondylus' fibula (no. 11 in the image above) and the Utatsusaurus sp. (primitive ichthyosaur) paddle in the diagram below: Figure 4 from Motani, 2005. Evolution of Fish-Shaped Reptiles (reptilia: Ichthyopterygia) in Their Physical Environments and Constraints The only cladistic data I can find on the interrelationships between thalattosauria, ichthyopterygia and sauropterygia, however, comes from the Pterosaur Heresies and Reptile Evolution - and, therefore, doesn't derive from the most reliable sources - lacks documented source references, and seems, at least in part, internally contradictory: Not having read Diedrich 2015 yet, my first question is, is there any more information on Blezingeria ichthyospondylus out there on easily accessible media (i.e., the internet, preferably open access)? Does anyone on TFF know about this species, and what is there to know about this species? Where does it fit in phylogenetically, and how does this relate to the other clades of marine reptile? Is there any merit to the above cladograms? Thanks for your help!
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- blezingeria
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Hello, I just wondered if anyone has seen something like this before. This tooth is from the Redonda formation, in Quay Co., NM. It measures 34mm long, and has a misplaced 8mm ridge of serrations, in addition to the two main edges that most teeth of this type have.
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- new mexico
- phytosaur
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Hi people. I found this fish in the Malagasy mountains in 2014. I think it's a Piveauia madagascariensis Lehman, 1952 ?? To get to the site we have to walk in the mountains for 4-5 hours, depending on the site we want to visit, for me it was a fabulous period, not only for the fossils, but also for the discovery of the way of life of the Malagasy, the all those that surrounds it. Merry Christmas and Happy New Year 2021 !!
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- 10
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- madagascar
- piveteauia
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I’ve got 186 pieces that all pretty much fit together. I numbered them and took photos to send to a paleontologist who is going to try to photoshop them together. I got the first two together.
- 6 replies
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- 10
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- arizona
- chirotherium
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Last month my dad and I ventured to the site of the former Granton Quarry in hopes of adding some nice Late Triassic fossils to my collection. We only stayed for an hour and a half because there isn't much there anymore. Much of the fossiliferous layer has been carved out by collectors. One spot looked as if someone just scooped out all of the rock. We were quite fortunate to find a spot that had been missed or had only recently been exposed. We came close on two occasions to finding a complete Diplurus newarki, but no luck this time around. That will just have to wait until our next trip! Here are some of my favorite finds: Some conchostracans (Estheria ovata) Several plates just covered in assorted bones and scales - I love the white/blue hue to these! First of the shamers. This fish is potentially complete, but when I tried to remove the last chip to see how well preserved the head is, the rock began to separate, so I just left it as is. For what it is worth, it is two-thirds of a Diplurus newarki, and two-thirds of a coelacanth is better than none! Here is the other one. This piece split off unevenly from a larger block - as often happens at Granton Quarry - exposing two heads of Diplurus newarki. One of the heads is incredibly well preserved and was likely part of a complete fish that was broken in half when the rock split. It is still a pretty cool find!
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This skull is from the Triassic Formation of Yunnan Province, China. Any idea what kind of marine reptile is that?
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I was looking at Triassic animals and the strange longisquama. I have only seen one image of a fossilized specimen, is there only one found? The things on its back I've also seen pits pictured two ways, either wings or coming out of its back straight up. Do we know enough so both are technically valid? Most interpretations I've seen have seven of the spikes but I counted eight. How many are there? Attached are pictures of the only specimen that came up, what I believe is the only bones found and two ways it has been made to look. This image says the display kind of like dimetrodon is the most likely one.
- 4 replies
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- kyrgyzstan
- longisquama
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