Why were there no tiny dinosaurs? You might blame the mammals reut.rs/4bzOtlI

Why were there no tiny dinosaurs? You might blame the mammals

Everyone knows dinosaurs got really big. Some of the long-necked plant-eaters were the largest land animals ever on Earth, as shown by Argentinosaurus, perhaps 70 to 90 tons and upwards of ​100 feet (30 meters) long. But how about tiny dinosaurs, like the size of a mouse? As far as we know, none ever existed.

reut.rs

The majority of living birds and mammals are smaller than the tiniest dinosaurs ever discovered. So what prevented dinosaurs from becoming truly tiny? The answer, new research suggests, may lie not in dinosaur biology, but in their ecosystems. Read more about the findings.👇

New Study Asks: “Where Are the Tiny Dinosaurs?” | AMNH

Research suggests that competition with mammals may explain why non-bird dinosaurs never evolved into truly tiny animals.

amnh.link

Were there tiny dinosaurs? New study explores one of evolution’s biggest mysteries | EurekAlert! www.eurekalert.org/news-release...

Were there tiny dinosaurs? New study explores one of evolution’s biggest mysteries

Dinosaurs are famous for being big, from the towering Tyrannosaurus rex to the colossal Apatosaurus. But a new study suggests that one of the greatest mysteries of dinosaur evolution isn’t ...

eurekalert.org

explanatory power of energetic fitness models across living amniotes and extinct non-avian dinosaurs academic.oup.com/evolut/artic...

The explanatory power of energetic fitness models across living amniotes and extinct non-avian dinosaurs

Abstract. Vertebrates have varied body size distributions. Among these, non-avian dinosaurs have uniquely large minimum and maximum sizes, but the reasons

academic.oup.com

So happy to be back out in Montana! Some great finds already this season including some teeny weeny croc teeth and a very cute baby T. rex premax tooth! But by far the best thing we’ve seen so far is a parade of very cute baby turkeys with their parents #FossilFriday

A new study finds that birds, mammals, lizards and snakes with larger brains have larger offspring, fewer offspring or both, and that extinct dinosaurs show reptile-like reproductive patterns, with higher counts of small offspring: doi.org/10.1098/rsos... #RSOS #evolution

🚨Research alert! For decades, scientists have puzzled over an evolutionary mystery: Why are bird eggs so large? A new study led by researchers at the Museum and Princeton University suggests that the key lies not in body size, but in brain size. Read more.👇

Why Do Birds Lay Such Big Eggs? | AMNH

New research finds that birds, the only living dinosaurs, evolved larger eggs as their brains got bigger.

amnh.link

Excited that the first paper from my dissertation is now out in Royal Society Open Science! @royalsociety.org We used PGLS to investigate the effect of brain size and metabolism on reproductive output across extant amniotes and dinosaurs 🧵 #FossilFriday royalsocietypublishing.org/rsos/article...

Alligator embryology on deck! @stephlechki.bsky.social @lnwilson.bsky.social @griffinlabpaleo.bsky.social

Evolutionary drivers of reproductive output variation among amniotes, and the origins of large offspring in birds royalsocietypublishing.org/rsos/article...

Evolutionary drivers of reproductive output variation among amniotes, and the origins of large offspring in birds

Abstract. Birds and mammals mostly produce clutches with small numbers of large individual offspring compared to non-bird reptiles, including dinosaurs on

royalsocietypublishing.org

Ever wondered what impact climate may have had on dinosaur body size? Us too! 🧵 Check out our new paper that tries to answer just that—out today in Palaeontology! @thepalass.bsky.social onlinelibrary.wiley.com/doi/full/10....

Body size evolution through shifting climatic conditions in Mesozoic dinosaurs

Body size evolution is commonly associated with climate change. For example, birds and mammals have been found to decrease in size with anthropogenic global warming. Recent studies have inferred dist...

onlinelibrary.wiley.com

Body size evolution through shifting climatic conditions in Mesozoic dinosaurs - Wilson - 2026 - Palaeontology - Wiley Online Library onlinelibrary.wiley.com/doi/abs/10.1...

Super stoked that our paper on gecko embryology and diel activity evolution is featured on the cover of @journal-evo.bsky.social! Finally, the most glorious lizards (Aristelliger) are getting the spotlight they deserve 😀

Aaron Griffing@aaronhgriffing.bsky.social · 6mo ago

I’m so excited to announce our new paper in @journal-evo.bsky.social showing how embryology can help us determine ancestral character states in temporal niche academic.oup.com/evolut/advan... Collab w/ A Bauer, A Wegerski, @tonygamble.bsky.social, & A Rasys #GeckoEvoDevo #Aristelliger 1/x