Interspecies Conflict/elephants vs theropods
Your answers are really the best (bears vs cats, big battles 1-3, very big battles, miniwarfare and cotylorhynchus) Very thanks.
Otherwise, according to your answers to: megalodon vs blue whale and megalodon vs battle ship, I assume that megalodon was really the second most powerful creature that ever lived. After a man and his weapons.
Elephants vs theropods
1) 3,5t Daspletosaurus vs 5,5t indian elephant
2) allosaurus (great specimen 11 m 4.5 t) vs 7t african elephant
3) 7t acrocantosaurus vs 12t paleoloxodon
4) Spinosaurus (super great specimen 24m lenght 8m hight 2,4m skull 22t weight) vs 3x 7t african elephant
5) Spinosaurus (super great specimen 24m lenght 8m hight 2,4m skull 22t weight) vs 95t argentinosaurus
5a) Spinosaurus (super great specimen 24m lenght 8m hight 2,4m skull 22t weight) vs 18t songhua river mammoth
6) 12t paleoloxodon vs 6t elasmotherium
7) Spinosaurus (super great specimen 24m lenght 8m hight 2,4m skull 22t weight) vs 15t eotriceratops
8) Spinosaurus (super great specimen 24m lenght 8m hight 2,4m skull 22t weight) vs 10,5t triceratops
9) 15t eotriceratops vs 2x 6t mapusaurus
10) 10,5t triceratops vs 2x 3,5t daspletosaurus
11) 10t t-rex vs 10t Giganotosaurus
12) 2t cotylorhunchus vs 100kg deynonychus
13) 1200kg pleistocene polar bear vs 1400kg ceratosaurus
14) 1600kg arctotherium angustidens vs 1400kg ceratosaurus
15) 7t african elephant vs 6t stegosaurus
16) allosaurus (great specimen 11 m 4.5 t) vs 5t megatherium
17) 650kg grizzlly bear vs 30x 20kg dhole
What you think about a 2,4m skull of spinosaurus??
Which animal was generally more mobile and agile? Panzer dinosaurs (Ankylosaurus, euplocephalus, polacantus ...) or cotylorhunchus?
Hello David. Thank you for the kind words.
Megalodon is probably right at the top (not including humans) among the most powerful creatures ever. It has some competition from the largest pliosaurs and Livyatan melvilli, but it's likely ahead of those creatures.
1) 3.5t Daspletosaurus vs 5.5t Indian elephant: There's no way to know for sure how the elephant will react to the Daspletosaurus, and how it does so will likely determine whether it survives the encounter or not. An Indian elephant doesn't encounter predators close to its own size, and may choose to flee rather than fight. Daspletosaurus has formidable jaws to bite with, and the elephant basically has its tusks & bulk to defend itself from this. If the elephant decides to fight, it will probably drive the Daspletosaurus away on most occasions.
2) Allosaurus (great specimen 11m 4.5t) vs 7t African elephant: This depends on the mentality of the elephant to some degree. It may panic at the sight of an approaching Allosaurus, and leave itself vulnerable to attack upon fleeing. Standing its ground will give it a chance. The Allosaurus was a skilled hunter of larger animals (although it probably hunted in groups), but learning how to get around an elephant's defenses won't be easy for it. If the elephant decides to fight, it will probably drive the Allosaurus away on most occasions.
3) 7t Acrocanthosaurus vs 12t Palaeoloxodon: Acrocantosaurus will bring its fearsome jaws to this battle, but the Palaeoloxodon will bring size and a set of very long tusks (as long as an automobile and mostly straight). This will be similar to the last 2 matchups. If the larger pachyderm stands its ground and fights, it will have enough of a size & reach advantage to repel the attacking Acrocanthosaurus. As with the other matchups, the theropod can certainly win with its experience dealing with large prey items, but the Palaeoloxodon should be favored.
4) Spinosaurus (super great specimen 24m length 8m height 2.4m skull 22t weight) vs 3x 7t African elephant: Each elephant will measure about 3.5m at the shoulder. The only way the elephants will realistically win is if they somehow work together to attack by charging into the Spinosaurus and attack with their tusks. I don't think the elephant will react this way. Having never dealt with a predator this large, the elephants will likely panic and fail to form a strategy ample enough to subdue this huge dinosaur. The Spinosaurus won't have the means to quickly kill any of the elephants, but it will likely bully them into a retreat. Spinosaurus wins.
5) Spinosaurus (super great specimen 24m length 8m height 2.4m skull 22t weight) vs 95t Argentinosaurus: Spinosaurus wasn't built to tackle large prey items the way a Tyrannosaurus was, and its jaws weren't nearly as formidable. Argentinosaurus is a massive sauropod, and will likely be able to repel a Spinosaurus with its enormous bulk (and perhaps its tail). Edge to Argentinosaurus.
5a) Spinosaurus (super great specimen 24m length 8m height 2.4m skull 22t weight) vs 18t Songhua river mammoth: Spinosaurus wasn't built to tackle large prey items (had long jaws with conical teeth designed to capture slippery aquatic animals). A mammoth close to its size range will be a tough adversary, and will likely be able to repel the dinosaur with strong charges and attacks with its long curved tusks. The Songhua river mammoth is actually believed to be a version of a steppe mammoth, and didn't attain the giant sizes originally assigned to it. Edge to Songhua river mammoth.
6) 12t Palaeoloxodon vs 6t Elasmotherium: The elephant-like Palaeoloxodon had very long tusks to give it a good reach advantage over the Elasmotherium in a stab vs stab war, but the sword-like forehead horn of the Elasmotherium (steppe rhinoceros) was probably a better overall weapon. Elasmotherium will have the advantage in lateral quickness, but will be giving up a lot in physical strength. In the same way a 6-ton elephant will be favored against a 3-ton rhinoceros, the Palaeoloxodon will be favored in this matchup.
7) Spinosaurus (super great specimen 24m length 8m height 2.4m skull 22t weight) vs 15t Eotriceratops: Even though the Spinosaurus is very tall and outweighs the Eotriceratops (in this scenario), its jaws are not as strong as, let's say, a Tyrannosaurus Rex's. Because the Spinosaurus primarily ate fish, it jaws were not evolved to be as effective against opponents than the jaws of other large theropods. The bite was not made for ripping off large chunks of flesh (like T-Rex's), but to capture and hold prey. The Spinosaurus' bite can certainly cause damage to another large animal, but it will take an accumulation of these bites to incapacitate the Eotriceratops. The Eotriceratops had sharp horns that could be driven into the Spinosaurus' body with great effect. The underbelly and sides of the Spinosaurus will be in range of upward thrusts by the horns. A strong charge might actually topple the Spinosaurus. The Eotriceratops' shoulder and neck area will be protected (for the most part) by its neck frill. Close battle, but Eotriceratops has the edge.
8) Spinosaurus (super great specimen 24m length 8m height 2.4m skull 22t weight) vs 10.5t Triceratops: The Triceratops will have it's chances, but it's giving up a lot of weight here. The clawed forelimbs of Spinosaurus may come into play considering its huge size. Edge to Spinosaurus.
9) 15t Eotriceratops vs 2x 6t Mapusaurus: The Eotriceratops is too big here. The bites of the Mapusauruses won't cause enough damage before one of them is bulldozed by the much larger ceratopsian. Once Eotriceratops dispatches one theropod, it will be able to concentrate solely on the other one, and defeat it as well. Eotriceratops wins.
10) 10.5t Triceratops vs 2x 3.5t Daspletosaurus: This will be similar to the previous matchup, but the Triceratops will be even larger compared to its attackers. The Daspletosauruses won't have enough time to cause serious injury before being stabbed or trampled. Triceratops wins.
11) 10t T-rex vs 10t Giganotosaurus: Giganotosaurus had a long skull, powerful jaws, & triangle-shaped teeth (8" long) with serrated edges. Tyrannosaurus was typically smaller, but one the same size as Giganotosaurus probably had a stronger bite with teeth of similar length (and a deeper lower jaw). Tyrannosaurus' teeth were wide at the base, meaning they likely dealt with high levels of force (and its thick muscular neck suggests this as well). This bite vs bite affair could go either way, but I'd favor the Tyrannosaurus.
12) 2t Cotylorhynchus vs 100kg Deinonychus: Deinonychus was an agile theropod with diverse weaponry (sharp teeth, clawed forelimbs/hindlimbs) and good leaping ability. Cotylorhynchus was a rotund herbivore with a very small head in comparison to its body. Its blunt teeth were made to grind tough vegetation. Cotylorhynchus was typically safe from predation once full-grown. Cotylorhynchus will have a hard time keeping the Deinonychus at bay, but the carnivore won't be large enough to make much headway with an animal weighing over 18 times as much as it does. Cotylorhynchus likely won't be able to kill the theropod, but should survive the encounter with minimal injuries. Cotylorhynchus wins.
13) 1200kg Pleistocene polar bear vs 1400kg Ceratosaurus: The Pleistocene polar bear may have the strength to topple the Ceratosaurus (at which point it can hold it down and kill it), but the Ceratosaurus' offense (huge bite) will be more effective for quick damage than the offense of the giant polar bear (jaws/paw swipes). Will be a decent battle, but the larger animal will have the edge. Ceratosaurus wins.
14) 1600kg Arctotherium angustidens vs 1400kg Ceratosaurus: Arctotherium was related to the modern spectacled bear, but was twice as tall at the shoulder and 9 times as heavy. It has the weight advantage in this battle, but it's not as formidable (pound-for-pound) as the Pleistocene polar bear. As with the last battle, the bear may topple the theropod, but its offensive weapons will pale in comparison in regards to quick damage. Still, with a decent weight advantage, the Arctotherium will make a good fight of it. Close to 50/50.
15) 7t African elephant vs 6t Stegosaurus: Stegosaurus was accustomed to being attacked by large theropods, and was adept at swinging its tail (armed with 4 meter-long spikes) to defend itself. Although the more aggressive elephant can certainly charge into the side of the Stegosaurus and drive it away, it won't have the mobility to avoid the tail spikes if both parties stick around to engage in a serious battle. One accurate strike from these spikes will likely be enough to repel the elephant (but probably won't kill it). I favor the Stegosaurus at parity, but an elephant with a 1-ton weight advantage and more aggression will have a decent chance. Both can win if determined; probably close to a 50/50 at these weights (slight edge to elephant).
16) Allosaurus (great specimen 11m 4.5t) vs 5t Megatherium: Megatherium has huge claws that can serve as weapons similar to the front claws of a grizzly bear or a giant anteater. The giant sloth's skin is reinforced with small pieces of bone that serve as a type of armor. Megatherium will be able to drive Allosaurus away in a confrontation on occasion, but its limited mobility will make it difficult to consistently keep the carnivore in front of it. The powerful jaws of Allosaurus will have some difficulty tearing into the tough hide of Megatherium, but they still will be capable of inflicting serious wounds over the course of a conflict (especially to the head/neck/limb areas). Allosaurus is also more accustomed to dealing with adversaries close to its own weight than Megatherium. Megatherium will hold it own on many occasions, but a determined Allosaurus will have the quickness & big bite to prevail as well. Slight edge to Allosaurus.
17) 650kg grizzly bear vs 30x 20kg dhole: Grizzly bears are among the most formidable of bears, and can be quite aggressive. They have massive shoulder humps that enable them to generate a lot of power in their paw swipes (10cm claws), and strong bites. Like all bears, grizzlies have good durability & great endurance. Dholes (Asiatic wild dogs) are effective hunters in a pack, and have excellent lateral movement. Realistically, a pack of dholes would avoid any contact with a huge grizzly bear like this one (and not risk their safety), but have the ability to cause trouble for it. If the dholes strategize and attack from all sides to confuse the bear, they may eventually wear it down, but their small bites won't have much effect until great accumulation has occurred. The dholes have the ability to succeed, but they won't attempt this in reality. The bear is simply too big & dangerous for them to tackle. Edge to grizzly bear.
Q: What you think about a 2.4m skull of Spinosaurus?
A: It was more likely closer to 2m in length considering the more conservative estimates for the size of this dinosaur (remains are incomplete, so size can't be accurately determined), but I wouldn't rule it out.
Q: Which animal was generally more mobile and agile? Panzer dinosaurs (Ankylosaurus, Euplocephalus, Polacanthus ...) or Cotylorhynchus?
A: I imagine the heavy armor of the ankylosaurs & similar dinosaurs (which made up a large % of their weights) made them somewhat sedentary. Even though Cotylorhynchus was rather rotund, its lack of this armor probably gives it the edge in mobility & agility.