![Micraster Evolution set No. 6](http://www.geoed.co.uk/cdn/shop/products/pictrilonew_52b59e93-7347-4749-9ece-e7e9859ff378_{width}x.png?v=1584359151)
A set of five models of the ambulacral areas: smooth; sutured; inflated; subdivided; divided. Each model is about 50 by 45 mm representing a ten times enlargement. They are based on specimens from the Middle and Upper Chalk of Southern England.
Size: Approx. 45 by 50 mm.
Size: Approx. 45 by 50 mm.