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Seal or Walrus?


hemipristis

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hemipristis

hello all, it's been a while since I've been on.  I hope you are all doing well in these trying times.

 

I recently purchased a series of large mammal phalanges from Lee Creek. They're clearly Yorktown (Pliocene). While they seem to resemble seal phalanges, they're awfully large (14-15 cm). I'm wondering if they are walrus instead?  

 

Does anyone know if the last Smithsonian Lee Creek volume (Vol 4) is available online as a pdf?  Alternately, are there easy "tolls" that I can use to distinguish, or does anyone feel comfortable making a distinction?  Thanks!

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There's no pdf online, but I'm happy to take a look if you post some photos!

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On 8/10/2020 at 6:22 AM, Boesse said:

There's no pdf online, but I'm happy to take a look if you post some photos!

Thank you!

 

There are 6 bones in total.  I won't overwhelm by posting all of them at once. I'll do one set at a time.  Here are the first two.

Set 1 side i.jpeg

Set 1 side ii.jpeg

1A end x.jpeg

1A end y.jpeg

1B end x.jpeg

1B end y.jpeg

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Set 2

Set 2 side i.jpeg

Set 2 side ii.jpeg

2A end y.jpeg

2A side x flipside.jpeg

2A side x.jpeg

2A side y flipside.jpeg

2B end x flipside.jpeg

2B end x.jpeg

2B end y flipside.jpeg

2B end y.jpeg

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Set 3

Set 3 side i.jpeg

Set 3 side ii.jpeg

3A end x flipside.jpeg

3A end x.jpeg

3A end y flipside.jpeg

3A end y.jpeg

3B end x flipside.jpeg

3B end x.jpeg

3B end y flipside.jpeg

3B end y.jpeg

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My hunch is that these are all the large seal Callophoca obscura - they don't really look a whole lot like Odobenus (modern walrus) phalanges/metapodials, and no published phalanges or metapodials of Ontocetus emmonsi exist.

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17 hours ago, Boesse said:

My hunch is that these are all the large seal Callophoca obscura - they don't really look a whole lot like Odobenus (modern walrus) phalanges/metapodials, and no published phalanges or metapodials of Ontocetus emmonsi exist.

thank you!

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