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--- dinosaurs [2021/08/05 04:16]
aga
+++ dinosaurs [2021/11/29 02:28] (current)
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 Dinosaurs probably had feathers. This contradicts the well-established image of these reptiles in pop culture, however, although the velociraptor known from Steven Spielberg's films was probably partially feathered. [([[https://www.nhm.ac.uk/discover/news/2020/march/the-first-dinosaurs-probably-didn-t-have-feathers.html|Natural History Museum]])]
+==== Species ====
+Estimates of the number of dinosaur species found in the Mesozoic Era range from 1543 to 2468 species. [([[https://royalsocietypublishing.org/doi/10.1098/rstb.2015.0219|Royal Society Publishing]])]
-{{tag>science fauna history}}
+==== Asteroid ====
+Many scientists believe the asteroid hit the Yucatan Peninsula in Mexico 65 million years ago and caused or contributed to the extinction of the dinosaurs. [([[https://www.nhm.ac.uk/discover/how-an-asteroid-caused-extinction-of-dinosaurs.html|Natural History Museum]])]
+==== Birds are dinosaurs? ====
+Technically dinosaurs are not extinct, as birds are considered by science to be a type of dinosaur. [([[https://www.livescience.com/are-birds-dinosaurs.html|Live Science]])]
+==== 0.1% of time ====
+Dinosaurs lived on Earth for 150 million years. For only 0.1% of that time, we have been on earth. [([[https://www.z-arts.org/dinosaur-facts/|Z Arts]])]
+==== Not much to go on ====
+Most dinosaurs are known based on only one tooth or bone. [([[https://www.scholastic.com/teachers/articles/teaching-content/unearthing-dinosaur-bones-and-fossils/|Scholastic]])]
+==== Diplodocus ====
+The longest dinosaur Diplodocus was 90 feet and was discovered in Wyoming, USA. [([[https://www.theguardian.com/science/2019/mar/25/natural-history-museum-to-start-dinosaur-dig-in-us|The Guardian]])]
+==== Less than a chihuahua ====
+The smallest known dinosaur was about 2.25 inches tall and weighed less than a chihuahua. [([[https://www.dogonews.com/2020/3/24/the-worlds-smallest-known-dinosaur-measured-less-than-2-dot-25-inches|Dogonews]])]
+==== Terrible lizard ====
+The word "dinosaur" comes from ancient Greek and means "terrible lizard." [([[https://www.highlightskids.com/explore/science-questions/why-do-dinosaur-names-end-saurus|Highlight Kids]])]
+==== 100 million years old bones ====
+In 2015. A 4-year-old looking for fossils found bones that were 100 million years old. [([[https://www.nbcdfw.com/news/local/child-4-finds-100-million-year-old-dinosaur-bones-in-mansfield/1998977/|NBC]])]
+==== Jurassic Park sounds ====
+The dinosaur sounds in the movie "Jurassic Park" were created from recordings of tortoises having intercourse. [([[https://www.cnet.com/news/tortoise-sex-snuck-into-jurassic-park/|CNET]])]
+==== Dominant land reptiles ====
+The first dinosaurs formed about 230 million years ago, in the part of the supercontinent Pangea that now corresponds to South America. Before that time, the dominant land reptiles were archosaurs ("ruling lizards"), therapsids ("mammal-like reptiles"), and pelycosaurs. [([[https://www.thoughtco.com/the-three-ages-of-dinosaurs-1091932|ThoughtCo]])]
+==== Warmblooded or cold-blooded? ====
+It is unlikely that giant dinosaurs, such as the Argentine dinosaur, were warm-blooded because they would have cooked from the inside out in a matter of hours. [([[https://www.usgs.gov/faqs/were-dinosaurs-warm-blooded-or-cold-blooded?qt-news_science_products=0#qt-news_science_products|USGS]])]
+{{tag>science biology fauna history}}

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