The smallest brittle stars found have just two segments per arm and a disc diameter of two millimetres.

Solitary tumor, smaller than 4 disc diameters (DD), at or behind the equator.

Measurement is obtained from a band 1.75 disc diameters concentric to the disc.

This is a rather robust brittle star with a disc diameter of up to 10 mm and an arm length of up to 45 mm.

The disc diameter was increased to 16 inches (40 cm) and the speed was reduced to 33 revolutions per minute.

This is the equation from above with corrections for astronomical refraction and solar disc diameter.

Curved channels provide greater length for the same disc diameter compared to straight channels, allowing the travel times of the waves to be tuned properly.

C. ricketti females are 28 mm long, with a disc diameter of 16 mm.

Blurring of nasal, superior and inferior poles in inverse proportion to disc diameter.

They can reach a length of about 13 cm, while the disc diameter reaches 20 mm.