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ahlung62

Help with ID for ventrally (?) compressed fish

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ahlung62

I just acquired a GRF fish plate with a Knightia, two Diplomystus, and an interesting ventrally compressed (?) fish.  Any help with identifying this fish would be greatly appreciated.  Thanks in advance.

IMG_1902.jpg

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Fossildude19

What is the size of the fish? 

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snolly50

It's pretty distorted, so just a guess. Consider Hypsidoris. The appearance of the tail and seemingly large-sized head suggest this ID to me. Tim just posted about size while I two finger typed. Yes, that info would help the ID efforts.

 

Hypsidoris is a Lake Gosiute critter, so collection location would also be important.

 

Another catfish, found in all Green River locales is Astephus, also consider.

 

 

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FossilDAWG

I was thinking the same thing, a catfish.  However I don't see the pectoral fin spines, which should be prominent. Maybe they are still buried in the matrix.

 

Don

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snolly50
5 minutes ago, FossilDAWG said:

However I don't see the pectoral fin spines

Don, exactly, I found a photo of Astephus in Grande's book. The spines are very robust in that image. The appearance of the skull and tail however, look like the critter above.

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ahlung62

The fish is about 4.5 in long and is on a matrix that more closely resemble material from the split-fish area of Fossil Lake rather than Lake Gosiute (Farson?).  Unfortunately, the plate did not come with any information regarding its origin.  My first thought was also a catfish, but upon close examination, there seems to be scales along the body.  That and the apparent lack of pectoral fin spines totally stumped me. 

Edited by ahlung62

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