Psephechinus sp. (circular variety)
Lower Jurassic (Pliesbachian - Toarcian)
Sub-betical beds (Spain)
Cicular variety
Ambulacral view.
By balanocidaris
Lower Jurassic (Pliesbachian - Toarcian)
Sub-betical beds (Spain)
Cicular variety
Ambulacral view.
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