Echinoidea image


Arachnoides placenta (oral)
Arachnoides placenta (oral)
Description Close-up of oral side of arachnoid echinoids: Parallel rows of tubercles carrying spines, and pore-pairs set with tube feet are arranged like the teeth of a comb. These fields are called "combed areas". On the oral side the combed areas alternate with plain fields, set with larger tubercles and spines for locomotion. Arrows indicate direction of food transport.
Scale 10 mm. Author Schultz, Heinke JPG file - 161.69 kB - 945 x 934 pixels added on 2005-02-23272 viewsEchinoidea taxaDigital photo, part of species Arachnoides placenta (Linnaeus, 1758)checked Kroh, Andreas 2021-02-24From reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke
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