#Fossil Discovery Rewrites Global #Dinosaur History https://www.sciencealert.com/fossil-discovery-rewrites-global-dinosaur-history paper: https://academic.oup.com/zoolinnean/article/203/1/zlae153/7942678

"Ahvaytum bahndooiveche is now the oldest-known dinosaur from #Laurasia, the Northern Hemisphere land mass of the late Paleozoic supercontinent #Pangea... That age places it in a similar time period to #dinosaurs of Pangea's Southern Hemisphere land mass, #Gondwana, which were thought to be the world's first by a long shot."

These Revolutionary Maps Are Revealing Earth’s Geological Secrets
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https://www.zmescience.com/science/tectonic-model-beatiful-new/ <-- shared technical article
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https://doi.org/10.1016/j.earscirev.2022.104069 <-- shared paper
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#GIS #spatial #mapping #tomography #geology #remotesensing #structuralgeology #plates #platetectonics #earth #global #model #modeling #opendata #opensource #spatialdata #vector #platemodel #mechanics #GPS #earthquakes #volcanoes #topography #orogeny #tectonics #spatiotemporal #spatialanalysis #Pangea #Gondwana #Gondwanaland #ReuniteGondwanaland #Laurasia #lithosphere #crust #mantle #core #geophysics #geochemistry #geochronology #dating #Mesoproterozoic

Study shows #orchids emerged in northern hemisphere and thrived alongside #dinosaurs for 20 million years https://phys.org/news/2024-02-orchid-family-emerged-northern-hemisphere.html

The origin and speciation of orchids https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.19580

"they were previously thought to have emerged on the #supercontinent #Gondwana, in what is present-day #Australia. However, the new study indicates their common ancestor may have originated in the northern hemisphere, on the supercontinent #Laurasia, before spreading out further into the world."

Fossil of Giant #Triassic #Amphibian Unearthed in Brazil
https://www.sci.news/paleontology/kwatisuchus-rosai-12636.html

Interrelationships among Early Triassic faunas of Western #Gondwana and #Laurasia as illuminated by a new South American benthosuchid temnospondyl https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.25384

"Named #Kwatisuchus rosai, the #animal was approximately 1.5 m in length. It belonged to #Benthosuchidae, a small group of giant #crocodile-like #amphibians that lived during the Triassic. They were primarily aquatic, living in rivers and lakes."

Now the more #riebeckite facies of the #Paleozoic #Quincy #Granite

The Quincy granite was a prized architectural stone, most famously used in the #BunkerHill Monument in #Boston #Massachusetts. Current dating suggests it was intruded into #Avalonia before it glommed onto #Laurentia as #Laurasia and #Pangea were assembled. Today’s #photo set comes from a walk around the eponymous Bunker Hill Quarry. I’ll post more about the history later. Captions!
#Fujifilm #XH1 #igneous #intrusive #NewEngland

#Paleontologists Discover New Species of #Dinosaur-Era Bird https://www.sci.news/paleontology/yatenavis-ieujensis-11504.html

New enantiornithine #bird from the the uppermost #Cretaceous of southern #Patagonia, #Argentina https://www.sciencedirect.com/science/article/abs/pii/S0195667122003160

#Yatenavis shares morphological features with Late Cretaceous #enantiornithines found at diverse localities, including #Madagascar, North America, Patagonia, and #CentralAsia. This may indicate the presence of an enantiornithine subclade widely distributed across #Gondwana and #Laurasia.