Petterd's Limpet Notoacmea petterdi
Small to medium-sized oval and flattened, shell. It has a sharp apex located at the base quarter. The base slope is arched. Its sculpture is of widely spaced, smooth, riblets crossed by concentric growth lines.
Shell dull white or light brown with 30-40 dark brown radiating bands. Interior pale brown. Sharply defined interior apex chocolate brown.
Southern Queensland, New South Wales, Victoria, Tasmania and eastern South Australia.
At or near high-tide level on exposed, often vertical, rock surfaces exposed to ocean surf.
It is known to grow older than ten years. Eggs are probably spawned singly into water in May or June. Spawning is probably triggered by storms and high seas. Larval development takes about 9 days from pink mature oocytes to the crawling animal (Anderson, 1965). Petterd's Limpet is preyed upon by Sooty Oyster Catcher.
Also known as Collisella petterdi
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