Jump to content

What’s this fish?


JohnBrewer

Recommended Posts

A freebie to me. 9C6500A1-EFDE-490F-BADE-BEEACB5AE1FD.thumb.jpeg.c7893d52e1236bdd754267d9a97e60a5.jpegCommon I’m sure, but what is it? From Parachute Creek I think. Yes, committed the cardinal sin, no scale. It’s around 8cm. 

 

@Fossildude19

  • I found this Informative 2
Link to post
Share on other sites

Nice little Knightia eocaena. :) 

 

EDIT: PS - You might want to turn him over. He might be getting dizzy from being upside down. :P 

 

 

9C6500A1-EFDE-490F-BADE-BEEACB5AE1FD.thumb.jpeg.c7893d52e1236bdd754267d9a97e60a5.jpeg

  • I found this Informative 6
Link to post
Share on other sites

Thanks Tim. Yeah, I knew I had a 50% chance of getting it the right way up. I had actually photographed it the right way up but rotated it because it looked more natural!

  • I found this Informative 2
Link to post
Share on other sites

With fish fossils showing the backbone attached to the skull, the vertebral column usually attaches to the top 1/3 - 1/2 or so of the skull.

So if the vertebral column is in the upper 1//3-  1/2 of the body, that is the top.  :) 

Or more simply, the verts are usually situated closer to the top of the fish than the bottom.

 

 

9C6500A1-EFDE-490F-BADE-BEEACB5AE1FD.thumb.jpeg.c7893d52e1236bdd754267d9a97e60a5.jpeg

 

Also, fin placement is  helpful for figuring out orientation. The belly or bottom (ventral) side will have (if they are preserved well, that is, they aren't on yours) the pectoral fins, pelvic fins, and anal fin showing. Usually only one or two dorsal fins on the top. 

 

Sorry for the impromptu lesson. :blush:

 

 

  • I found this Informative 10
Link to post
Share on other sites

 Hard to tell from the photo but there seems to be some paint work on the tail  and the other fins?  Not sure.  but it looks very much like a Knightia from GRF? 

 

RB

  • I found this Informative 1
Link to post
Share on other sites
1 hour ago, RJB said:

 Hard to tell from the photo but there seems to be some paint work on the tail  and the other fins?  Not sure.  but it looks very much like a Knightia from GRF? 

RB

Good eye, Ron.  :) 

Definitely looks a bit painted.

And I agree, probably Green River Formation, but not the Parachute Creek Member. I believe articulated fish fossils are not abundant there.

  • I found this Informative 1
Link to post
Share on other sites
On 2/14/2019 at 5:42 PM, Fossildude19 said:

but not the Parachute Creek Member.

I didnt catch this.  Its most deffinetly not from the Parachute member.

 

RB

  • I found this Informative 1
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...