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| New small azhdarchid from the late Cretaceous | |
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| Topic Started: Aug 31 2016, 11:26 AM (607 Views) | |
| Rudyn | Aug 31 2016, 11:26 AM Post #1 |
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New small azhdarchoid pterosaur from the latest Cretaceous found in Canada. http://rsos.royalsocietypublishing.org/content/3/8/160333 http://www.sci-news.com/paleontology/small-bodied-pterosaur-canada-04148.html http://markwitton-com.blogspot.hu/2016/08/new-paper-at-last-small-pterosaur.html Edit: Currently the smallest azhdarchid from Late Cretaceous North America found. This new species may show that smaller sized pterosaurs may were more common and diverse towards the end of the Late Cretaceous then we thought before. Edited by Rudyn, Aug 31 2016, 04:41 PM.
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| Acinonyx Jubatus | Aug 31 2016, 12:12 PM Post #2 |
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I AM THE UNSHRINKWRAPPER!
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As a resident of BC, and as one who was sorely disappointed when Gwawinapterus turned out to be a fish: IT'S ABOUT TIME. |
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| babehunter1324 | Aug 31 2016, 12:20 PM Post #3 |
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Well this is pretty exciting, I hope we will start to find more fossils of Pterosaurs from the Campanian and Maastritchian. |
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| heliosphoros | Aug 31 2016, 02:51 PM Post #4 |
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The idea that pterosaurs were outcompeted by birds has long since been dismissed. If people were still spouting that anytime in 2016 I'm going to be pissed. Anyways, technically this isn't something terribly new (mini-azhdarchids are also known from the Late Cretaceous of Hungary and Romania), but it does help to show that small sized azhdarchids were in fact common in the Late Cretaceous. So far we have evidence of: - Late Cretaceous azhdarchids ranging from cat-size to giraffe size - Late Cretaceous nyctosaurids - Late Cretaceous pteranodontids - Late Cretaceous tapejarids (Cauiajara and possibly Bakonydraco and Montanazhdarcho; though the idea that these last two are azhdarchids is still possible) - Whatever Navajodactylus is (not an azhdarchid since it lacks synapomorphies) Edited by heliosphoros, Aug 31 2016, 02:52 PM.
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| CyborgIguana | Aug 31 2016, 03:17 PM Post #5 |
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I'm really enjoying this flood of unexpected Campanian and Maastrichtian pterosaur discoveries lately. Late Cretaceous pterosaur decline, my ass! |
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| Rudyn | Aug 31 2016, 04:17 PM Post #6 |
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@heliosphoros: Sorry I didn't want to piss off anybody. I was misinformed about birds . And I didn't say that something terribly new I just wanted to show the new species.But yes how I formulated it's really equivocal. So let mee fix/edit my comment about the new Azhdarchid in the beginig. Sorry about late creatceus I was thinking about the end of late cretaceus the time between end of Campanian and the end of Maastrichtian. But you are right some smaller sized pterosaurs like Montanazhdarcho and Navajodactylus and the unamed romanian Azhdarchid live around this time period. Though they weren't cat sized but if we compared them with some "giants" from this time period they also weren't so huge. And thanks for the summary about the evidence of Late Cretaceous pterosaurians.
Edited by Rudyn, Aug 31 2016, 05:54 PM.
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| Incinerox | Aug 31 2016, 09:37 PM Post #7 |
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Āeksiot Zaldrīzoti
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Another thing worth mentioning when it comes to end-Cretaceous species is that despite all the glory that is Laramidia, India/Madagascar, and MAYBE some parts of East Asia, our record of Maastrichtian ecosystems is actually TERRIBLE overall. |
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| the dark phoenix | Sep 1 2016, 12:06 AM Post #8 |
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King of wonderlandia
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Well world wars, political borders, and of course money get in the way of many wonderful things... Also said wars may have blown up anything worth getting or some industrialist decided to plop a skyscraper on top of the remains of something brand new. Heck Mines harass paleontologists to hurry up so they can continue... Are we even finding anymore things from where gasosaurus was found or did we just drill away anything else good for the sake of some non-renewable resource... Remains from other places are horrible because the situations that allow us access are just as horrible. Certainly not gonna find much in the middle east or North Korea...Do we even find anything in central Africa? |
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| babehunter1324 | Sep 1 2016, 04:08 AM Post #9 |
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Well, we are getting there in the Iberian-Armorican and Hateg region in spite of the lack of good fossil material on the former and the surprissingly wide stratigraphy in the latter, we have a pretty good idea of the ecological make-up and progression that occured throught the Maastritchian. In the Ibero-Armorican region there was a very significant flora and fauna turn over, the main reason were a change of the sea level as well as the entry of derived Hadrosauroid and Lambeosaurid Hadrosaurs, the arrival of those groups take a heavy toll in all other groups, Rhabdodontids apparently became extinct, there's only one known specimen referable as a Nodosaurid, several genera of Titanosaurids became extinct though a few of them survived and the ammount of known Abelisaurids and Dromeosaurids material (mostly teeth) decreases though they were still there. On Hateg, on the other hand some material refered to Zalmoxes is known fro the Sebes stratigraphic column which is one of the last units before the K/T extinction, the basal Hadrosauroid Telmatosaurus is known from lower stratigraphic columns so here Hadrosauroids probably did not exclude Rhabdodontids. And well we had a lot of material from the lower strata from Hateg and the lack of apparent faunal turn over makes it quite likely that the fauna assamblege didn't change as much as in the Western Europe Archipelago. Also just a few days ago I found a paper that plotted the stratigraphy of Hateg Island, unfortunatelly I can't find it now >.< Edited by babehunter1324, Sep 1 2016, 04:22 AM.
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