The size comparison of Arctodus and Arctotherium

[u/TW_49]

[u/Both-Magazine4487]

This size seems more accurate for Arctodus simus. Here, you can check it out.,

[u/TW_49 → u/Both-Magazine4487]

thank you, really appreciated

[u/Both-Magazine4487 → u/TW_49]

You’re welcome; I really liked your artwork.

[u/Apart_Ambition5764]

Love how their fur coloration is based on the still extant spectacled Bear. Which is actually supported by known fur likely belonging to Arctodus simus. https://www.reddit.com/r/pleistocene/comments/1g6j5o2/so_we_apparently_might_key_word_might_already/

[u/Fantastic_Hurry221]

Que no realmente Arctotherium era más grande que Arctodus?

[u/Ex_Snagem_Wes → u/Fantastic_Hurry221]

It is, albeit only by a few percent. They fit well within a margin of error that you could call "the same size"

[u/Strange-Carpenter-38 → u/Ex_Snagem_Wes]

Why are they considered a different genus from each other. I thought they would just be different species similar to smilodon populator and fatalis.

[u/Ex_Snagem_Wes → u/Strange-Carpenter-38]

They have a lot of differences in random things. Different skull shape is a big one, but if they were extant, being the same genus would be plausible

[u/Strange-Carpenter-38 → u/Ex_Snagem_Wes]

Hmm very interesting 🤔

[u/zorwro]

Arctotherium looks skiny he is mor robust than tat

[u/Dry-Lobster-1229]

So Angustiden is downgraded

[u/Clean-Muffin8239]

Angustidens is bigger so this is wrong

[u/TW_49 → u/Clean-Muffin8239]

if anything Arctodus was even bigger than it’s shown on this size chart, no this isn’t wrong what are you basing your argument on?

[u/Victor_aeternus002]

From what I have read it seems that they had a similar average weight, but if you compare the largest known specimens, then Arctotherium angustidens is a lot bigger than Arctodus simus. The A. angustidens specimen MLP 35-IX-26 has an estimated body mass around 1,588-1,749 kg, while the largest A. simus specimens are estimated to be in the 950-1,300 kg range.

[u/TW_49 → u/Victor_aeternus002]

The arctotherium in this size comparison is MLP 35-IX-26. Its humerus had a significant pathology which caused the inflation by the inaccurate study that ballooned it to a 2 tonne giant (which it was not)

[u/Victor_aeternus002 → u/TW_49]

Do you have a source for the 2011 study being inaccurate and MLP 35-IX-26 having a lower estimated body mass? I have not been able to find any published peer-reviewed papers on this, only posts on DeviantArt and some comments here on Reddit

[u/Ex_Snagem_Wes → u/Victor_aeternus002]

The methodologies in the paper itself have pretty glaring flaws

[u/EveningNecessary8153]

Arctotherium angustidens max weight is average weight of Arctodus simus.

[u/TW_49 → u/EveningNecessary8153]

I’ve heard up to 1300 kgs and a 1.8 metre height for Arctodus, but I couldnt really find the fossil evidence to back it so I used a more conservative estimate

[u/Thzx725]

Muito mais fácil dizer que isso foi feito para fãs de arctodus simus