Ceratiocaris or Slimonia?

[Per Christian]

Hi all. 

 

I have this specimen i bought fra a dealer in western europe It's from the Lesmahagow in scotland. I bought it as a Slimonia, but was later advised on facebook that it's in fact a ceratiocaris. What do you guys here think? I'm pretty convinced it's a ceratiocaris. What confuses me is that the dealer is quite experienced and he collected it himself decades ago, and got it id'ed by the museum in Edinburgh 

 

 

 

 

 

[Tidgy's Dad]

Dunno, but that's really, really nice. 

[Per Christian]

21 minutes ago, Tidgy's Dad said:

Dunno, but that's really, really nice. 

It's a beauty!

[piranha]

Ceratiocaris is correct.  The head shield on Slimonia is square-shaped.

 

 

figures from:

 

Rolfe, W.I. 1962
Grosser Morphology of the Scottish Silurian Phyllocarid Crustacean, Ceratiocaris papilio Salter in Murchison. Journal of Paleontology, 36(5):912-932

 

Woodward, H. 1872
A Monograph of the British Fossil Crustacea Belonging to the Order Merostomata: Pterygotus and Slimonia. Palaeontographical Society, 3:71-120

[Per Christian]

59 minutes ago, piranha said:

Ceratiocaris is correct.  The head shield on Slimonia is square-shaped.

 

 

figures from:

 

Rolfe, W.I. 1962
Grosser Morphology of the Scottish Silurian Phyllocarid Crustacean, Ceratiocaris papilio Salter in Murchison. Journal of Paleontology, 36(5):912-932

 

Woodward, H. 1872
A Monograph of the British Fossil Crustacea Belonging to the Order Merostomata: Pterygotus and Slimonia. Palaeontographical Society, 3:71-120

Thanks! You confirm my already big suspicion