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Showing results for tags 'gondwana'.
Found 10 results
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Relict duck-billed dinosaurs survived into the last age of the dinosaurs in subantarctic Chile.
Oxytropidoceras posted a topic in Fossil News
Never-before-seen 'missing link' dinosaur walks, drinks and socializes in stunning new animation By Harry Baker Live Science , June 27, 2023 Descubren nueva especie ancestral de dinosaurio pico de pato que vivió hace 72 millones de años en la Patagonia Universidad de Chile, Press Release. Chile y la U. de Chile presentan al mundo una nueva especie de dinosaurio. Universidad de Chile, Youtube The open access paper is: Alarcón-Muñoz, J., Vargas, A.O., Püschel, H.P., Soto-Acuña, S., Manríquez, L., Leppe, M., Kaluza,-
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- chile
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Likely/possible specimens of Tyrannosauroidea from the Southern Hemisphere (Jurassic-Early Late Cretaceous)
Joseph Fossil posted a topic in General Fossil Discussion
As a freshmen in College, I did a little extra credit report for my geology class about a controversial topic - Tyrannosauroidea diversity in the Southern Hemisphere during the Jurassic-Early Late Cretaceous periods. I was quite surprised at the amount of specimens I found. This diversity likely was the result of an early spread of the early tyrannosaur group Pantyrannosauria into Africa, Eurasia, and North America during the Jurassic and diversified once the land connecting these continents spread out more. Most of these species lived during the Early Cretaceous, though one or two exceptions -
A while back, I was researching the number of likely Tyrannosauroidea dinosaurs that inhabited the Southern Hemisphere (I know this is a very controversial subject) in the Early Cretaceous for an extra credit research paper I was doing for my freshmen year college geology class. As I was looking for data for the paper, I found an unusual data entry on the paleontological database website fossilworks.org - It lists Tyrannosauridae remains from Jurassic Madagascar. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=55391 The specimen
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- tyrannosaur
- gondwana
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Supermountains might have affected the evolution of life on Earth
Oxytropidoceras posted a topic in Fossil News
Supermountains controlled the evolution of life on Earth Australian National University, February 2, 2022 EurekaAlert posting Scientists discover lost range of 'supermountains' three times longer than the Himalayas By Brandon Specktor, Live Science, February 4, 2022 The destruction of these ancient mountains may have fueled Earth's biggest evolution booms. Selected papers: Zhu, Z., Campbell, I.H., Allen, C.M., Brocks, J.J. and Chen, B., 2022. The temporal distribution of Earth's supermountains and their potential- 2 replies
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- nuna supermountain
- atmospheric oxygen
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Strange streamers on the shoulders of this chicken sized feathered dinosaur were probably used for display. https://www.google.com/amp/s/www.sciencenews.org/article/dinosaur-fuzz-rods-feathers-first-southern-hemisphere/amp
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Shallow Marine Isocrinoids Lasted Longer in Southern Hemisphere
Oxytropidoceras posted a topic in Fossil News
Major shift in marine life occurred 33 million years later in the South. British Antarctic Survey, May 17, 2018 https://www.sciencedaily.com/releases/2018/05/180517081829.htm Fossil find of 33-million-year-old sea lilies in outback WA challenges major palaeontology theory By Lisa Morrison University of Western Australia, May 22, 2018 http://www.abc.net.au/news/2018-05-23/sea-lily-fossil/9790656 The open access paper is: Rowan J. Whittle, Aaron W. Hunter, David J. Cantrill, and Kenneth J. McNamara. Globally discordant Isocrinida-
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- gondwana
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Five New Fossil Forests Found in Antarctica Hundreds of millions of years ago, Antarctica was carpeted with prehistoric greenery. Now, scientists may have uncovered clues about what happened in the "Great Dying," or Permian extinction. National Geographic https://news.nationalgeographic.com/2018/03/antarctica-fossil-forest-discovery-permian-spd/ A related paper is: Taylor, E.L., Taylor, T.N. and Cúneo, N.R., 1992. The present is not the key to the past: a polar forest from the Permian of Antarctica. Science, 257(5077), pp. 1675-1677. https
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- glossopteris
- petrified forest
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How Frogs Benefited From The Dinosaurs' Extinction Facebook. The two-Way, NPR, July 3, 2017 http://www.npr.org/sections/thetwo-way/2017/07/03/535383841/how-frogs-benefited-from-the-dinosaurs-extinction Extinction event that wiped out dinosaurs cleared way for frogs, Florida Museum of Natural History, July 3, 2017 https://phys.org/news/2017-07-extinction-event-dinosaurs-frogs.html The paper is: Yan-Jie Feng, David C. Blackburn, Dan Liang, David M. Hillis, David B. Wake, David C. Cannatella, and Peng Zhang, 2017, Phylogenomics rev
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- phylogenomics
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An interesting article about a new sauropod from Tanzania: http://phys.org/news/2014-09-species-titanosaurian-dinosaur-tanzania.html The discovery of a titanosaur from the Middle Cretaceous deposits in Tanzania is significant in many respects. First, it represents the third diagnostic titanosaur from Cretaceous sediments in sub-Saharan Africa. Second, it bolsters the hypothesis by Paul Sereno and colleagues that the breakup of Gondwana was a rather gradual one, so a number of titanosaurs known from South America may also have inhabited sub-Saharan Africa at a time when South America was sl
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Hi all, During Permian times, the Glossopterids constituted the major/characteristic component of many Gondwanan floras. This certainly also holds for the floras of the Illawarra Coal Measures, from which I have a couple of plates. However, it doesn't mean no other plant types occurred in these Permian forests, of course, they are just less common. While examining one of my plates, I noticed something "different" and after a bit of cleaning, this is what I found. My very first specimen from a so-called Glossopteris-flora which is definitely not a Glossopterid species. Probably, this is a p
