79 Patella pellucida. Shell length 9.2mm. Growth Stage 4 holdfast dweller (GS4h). September 2014. North Yorkshire, England. – Marinvert

79 Patella pellucida. Shell length 9.2mm. Growth Stage 4 holdfast dweller (GS4h). September 2014. North Yorkshire, England.

Ventral view of odontophore with detached radula.
Within the buccal cavity there is a large, pink odontophore consisting of a right (1) and left (2) bolster which is covered in thick cuticle. Much of a bolster is made of strong cartilage-like material.
The hyaline shield (3) of the radula rests on the dorsum of the odontophore. The radula is created in the radular sac, starting colourless and unmineralized at the posterior (4) and becoming progressivly more strongly coloured/mineralized as it progresses to the anterior (5).
Concise
Part 1, SHELL FORMS: 02 Patella pellucida. Growth Stage 2 (GS2). July 2012. Littoral. North Yorkshire, England. © P. Lightfoot.
Part 2, BODY & ANATOMY: 03 Patella pellucida. Growth Stage 3 (GS3). 2009. Sublittoral, Farne Islands, Northumberland, England. © P.Lightfoot.
Part, 3 HABITS & ECOLOGY: 04 Patella pellucida. Length 4.6mm. Growth Stage 3 (GS3). September 2016. Yorkshire, England. © P.Lightfoot.

Imprint

Photographic guide to the identification and biology of European marine invertebrates

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