Did sauropods have trunks?
The lack of appropriate facial musculature, the absence of muscle attachment sites, and the presence of small facial nerves all show that sauropods did not, and could not have had, trunks.
What is a putative explanation for why mammals do not achieve the body sizes achieved by sauropod dinosaurs?
A mammal of a given size uses ten times more energy than does a reptile or a dinosaur of the same size. In other words, mammals can’t evolve bodies as large as the largest dinosaurs because they need to use so much of their physical energy – provided by the food they eat – towards keeping their bodies warm.
What is the heaviest dinosaur ever?
The heaviest dinosaur was Argentinosaurus at 77 tonnes. It was the equivalent to 17 African Elephants. Argentinosaurus is a double award winner being also the longest dinosaur. It is also the largest land animal to have ever lived.
Did sauropods have cheeks?
Trunks are a no, but did sauropods have ‘lips’ or ‘cheeks’? For now, I’ll summarise things by saying that sauropod skull bone texture indicates that they likely did have extra-oral tissues that mostly covered their teeth (Witton 2018), meaning that they were facially similar to lizards and kin.
Do dinosaurs have trunks?
Soft tissue is tricky to find in fossils because the conditions must be just right to record its imprint. Most of the early animal fossils I’ve seen are those of fauna more like a jellyfish than any current extant animals. That said, nobody is saying dinosaurs had trunks.
What was the smallest sauropod dinosaur?
Magyarosaurus (“Magyar lizard”) is a genus of dwarf sauropod dinosaur from late Cretaceous Period (early to late Maastrichtian) in Romania. It is one of the smallest-known adult sauropods, measuring only six meters in length. The type and only certain species is Magyarosaurus dacus.
How come dinosaurs were so big?
They had hollow bones, didn’t chew their food, they had incredibly long necks, and likely possessed huge stomachs. These traits are theorized to be key in how they attained their enormous size.
What is the evidence that sauropods didn’t really chew their food?
What is the evidence that sauropods didn’t really chew their food? Sauropods had no inset tooth rows for cheeks. No blocks of grinding teeth or dental batteries. They did not have the ability manipulate the food with their tongues.
Did Ceratopsians have cheeks?
A large, outwardly-directed jugal (i.e., “cheek bone”) in many ornithischians, especially the horned ceratopsians, was also a dead give-away for the likely presence of a large muscle body to run through and extend forward and down to the lower jaw.
What is the cutest dinosaur?
Top 10 Cutest Dinosaurs of the Mesozoic Era
- of 10. Chaoyangsaurus. Chaoyangsaurus fossils have been found in the Liaoning Province in northeastern China.
- of 10. Europasaurus.
- of 10. Gigantoraptor.
- of 10. Leaellynasaura.
- of 10. Limusaurus.
- of 10. Mei.
- of 10. Micropachycephalosaurus.
- of 10. Minmi.