Mauna Dasari Profile picture
Mar 29, 2018 17 tweets 10 min read Twitter logo Read on Twitter
NEXT UP: 3rd seeded Dimetrodon limbatus vs 2nd seeded Amebelodon fricki!!! #2018MMM
Hand-claps for @MarcKissel who wrote this amazing BATTLE OF THE DONS!!! #2018MMM (I'm just the messenger tonight)
Dimetrodon has already defeated Aegyptopithecus zeuxis & devoured Pseudaelurus quadridentatus, while Amebelodon has out-competed Deinogalerix koenigswald & scared off Homo floresiensis #2018MMM
Dimetrodon was an apex predator. Their powerful teeth & jaws made them a fearful predator. The distinctive dorsal sail is made up of the elongated part of the spinous process of the back bone (you can feel your own spinous process along the back of your spine) #2018MMM spinous process
The tips of the bone of Dimetrodon's sail curve irregularly "like the fingernails of the senescent Howard Hughes" Rega et al. 2012 (…) #BestAnalogyEver #2018MMM
Remember, if you learn nothing else about the lovely Dimetrodon, know that it was <not> a dinosaur. While they are not-quite-mammals, you are more closely related to Dimetrodon than Dimetrodon was to a T. Rex! #2018MMM
As we've mentioned before, Amebelodon (named in 1927) is known to be a distant relative of the modern elephant. This order of elephant-like creatures, Proboscidea, originated in Africa… #2018MMM
Proboscidea migrated out of Africa & "through all the continents and climates of the globe except Australia" potentially because of overpopulation. In each new climate, they adapted in new ways, which resulted in much diversity & specialization… #2018MMM
Amebelodon's ancestors were the shovel-tuskers Phiomia osborni of the Middle Oligocene of Egypt, which were the most ancient & one of the most highly specialized of 3 distinct phyla of mastodonts which frequented shallow lake borders (Osborn 1934) #2018MMM
Our battle takes place in the Ash Hollow Formation of Nebraska (, where many Amebelodon fricki bones have been found. Some specimens had lower jaws (AKA, mandibles) & tusks (AKA incisors) that were ~2m long (Osborn 1936)!… #2018MMM Amebelodon was known for it's shovel-like tusks.
It is unknown how big Amebelodon fricki were, but the bodies of some members of the genus were as big as 3 m long & 3 m tall #2018MMM
Amebelodon occupied a mosaic, but mostly dry, environment & used its tusks to scrape bark. Its trunk was probably much like an modern elephant… #2018MMM
Dimetrodon is looking for its own food. Recent work suggests that they fed in shallow waters hunting sharks (Dimetrodon teeth have been found embedded in shark fossils!…) #2018MMM
Dimetrodon, having wandered into the Amebelodon's environment is not really sure what to do. But he spots a baby Amebelodon which looks like an easy meal & potential #carnage #2018MMM
Dimetrodon tries to bite the the not-quite-elephant. Its serreated teeth were adapted to tearing flesh… @kirstisaur #2018MMM
Amebelodon, noticing what the definitely-not-a-dinosaur Dimetrodon is up to, rushes toward it to protect the baby #2018MMM
Modern elephants will protect babies from predators #2018MMM

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More from @chumblebiome

Mar 29, 2018
FIRST UP: 1st-seed Orinoco crocodile (Crocodylus intermedius) vs. 5th-seed Secretary Bird (Sagittarius serpentarius)! #2018MMM secretary bird glamour shotOrinoco croc showing off it's jaws
Our competitors in this first battle have so far only faced off with much smaller Arthropod foes, so the Sweet 16 Round will be their first tournament tumble with large vertebrate competitors. #2018MMM
The Secretary Bird has used its lengthy gams to crush the carapace of a horseshoe crab and given the mantis shrimp the ol' one-two kick right out of the tournament (and this life). #2018MMM
Read 18 tweets
Mar 23, 2018
NEXT UP: #2 seed Cape Town Chacma Baboon (Papio ursinus) vs #7 seed Porcupine (Erethizon dorsatum) #2018MMM
It's round 1 all over again: Primate vs Spiky thing! #2018MMM Unlike R1, tonight's battle was a collaboration between @je_light and I!
Baboons are in the same primate group as rhesus macaques (Cercopithecidae). These Old World monkeys last shared a common ancestor with New World porcupines (Erethizontidae) ~90 mya ( #2018MMM
Read 19 tweets
Mar 22, 2018
NEXT UP: 2nd-seed Green Anaconda (Eunectes murinus) vs. 15th seed Tardigrade (Milnesium tardigradum) #2018MMM
The tardigrade was discovered by German Pastor J.A.E. Goeze in 1773. He dubbed it a "water bear" based on the way it moves-like of a bear lumbering around. Water bear isn't the only name for the tardigrade, however. It is also known as the "moss piglet". #2018MMM
A moss piglet known by any other name would be just as indestructible. Tardigrades are "extremophiles" that withstand environments up to and including the vacuum of space. The post-apocalyptic world is one of cockroaches and tardigrades. #2018MMM
Read 23 tweets

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