this post was submitted on 18 Jun 2025
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What is this thing?

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I was told it was found some decades ago in a river bed in Buenos Aires, Argentina.

I tried image searching it but couldn't quite find an equal one.

Also looks wrong for the location. Does anyone know which animal could it have been?

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[–] Mothra@mander.xyz 9 points 2 weeks ago

Like others said, sea lion. Nice find, really nice

[–] MrsDoyle@sh.itjust.works 8 points 2 weeks ago
[–] JohnnyCanuck@lemmy.ca 8 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

Looks a bit like a seal skull to me.

Edit: maybe a South American sea lion

[–] Thadden@lemmy.world 6 points 2 weeks ago

Yes I think you might be right, it does look a lot like a sea lion. Especially because of the two sets of fangs. Thank you.

[–] OldManBOMBIN@lemmy.world 3 points 2 weeks ago (1 children)

I'm just some guy, but I agree that it looks like a South American sea lion skull. Missing the lower jaw and some upper teeth, and possibly with a damaged sinus cavity

[–] Salvo@aussie.zone 4 points 2 weeks ago (1 children)

One of the tests they have for Palaeontology students is give them a Sea-lion skull, grey wolf skull, red fox skull and cast of a Thylacine skull.

Most of the time, they can differentiate the sea-lion or the Wolf, (both Canids), but cant differentiate the Fox from the Tassie Tiger.

[–] OldManBOMBIN@lemmy.world 2 points 2 weeks ago (1 children)

Is this just a fun anecdote or are you telling me something about my guess? Because I just woke up and don't know how to take things yet

[–] Salvo@aussie.zone 2 points 2 weeks ago (1 children)

Just an anecdote. I agree with you that it is probably some sort of pinniped (seal or sea-lion)

[–] OldManBOMBIN@lemmy.world 2 points 2 weeks ago* (last edited 1 week ago)

I forgot about this entire thing. But roger that o7

[–] Onomatopoeia@lemmy.cafe 3 points 2 weeks ago

Some kind of boar?

[–] Tagger@lemmy.world 3 points 2 weeks ago
[–] Rivalarrival@lemmy.today 2 points 2 weeks ago

I think it's a fish.

To check, we count the number of bones in the skull. One in the bottom, one in the top, lots of teeth, but not enough to be a fish.

[–] Jayve@lemmy.world 2 points 2 weeks ago (1 children)
[–] Thadden@lemmy.world 2 points 2 weeks ago

Jaja tiene sentido! Ahora las cabras están a salvo.

[–] Kolanaki@pawb.social 2 points 2 weeks ago

The almost cyclops like hole in the center is almost like a mastodon or elephant skull, but the teeth are definitely not and it doesn't appear to be that large... Maybe a big cat? A boar?