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Stauranderaster pistilliferus (Forbes)

 

Remains of this distinctive Stauranderaster are scarce and scant.  The central disc possesses an impressively armoured crown of elongate conical ossicles, the apex of which are sometimes swollen and bulbous.  Recorded specimens are from the White Chalk.

 

A B

1).  Typical ossicles of the central disc; (A) An elongate cone with a bulbous apex, note the crinkled and granular surface texture (x3.8, Kent, BMNH (British Museum (Natural History) London) E2564); (B) A low cone with an adherent serpulid worm tube (x6.5, Hope Gap, Lewes Nodular Chalk Formation (Beeding Beds), Randell Collection RR 1472). Image A 2005 The Natural History Museum, by kind permission.

 

2).  An association including elongate central disc ossicles with flared bases and bulbous tips (possibly part of the material figured in Dixon, 1850) (x4.3, White Chalk, Willett Collection?, Booth Museum, by kind permission of John Cooper);

 

3).  An association of disarticulated ossicles (x2.8, Bromley, Kent, BMNH (British Museum (Natural History) London) E2565).  Image 2005 The Natural History Museum, by kind permission.