Pterynotus triformis

Muricidae
Triple Murex
  • Pterynotus triformis, 1 of 2. Eden, NSW, Photo: Andrew Green
    Pterynotus triformis, 1 of 2. Eden, NSW, Photo: Andrew Green
  • Pterynotus triformis, 2 of 2. Eden, NSW, Photo: Andrew Green
    Pterynotus triformis, 2 of 2. Eden, NSW, Photo: Andrew Green
  • Pterynotus triformis, Port Phillip Bay, VIC, Photo: Rick Stuart-Smith
    Pterynotus triformis, Port Phillip Bay, VIC, Photo: Rick Stuart-Smith
  • Pterynotus triformis, Port Phillip Bay, VIC, Photo: Rick Stuart-Smith
    Pterynotus triformis, Port Phillip Bay, VIC, Photo: Rick Stuart-Smith
  • Pterynotus triformis, Rocky Cape, TAS, Photo: Rick Stuart-Smith
    Pterynotus triformis, Rocky Cape, TAS, Photo: Rick Stuart-Smith
  • Pterynotus triformis, Rocky Cape, TAS, Photo: Rick Stuart-Smith
    Pterynotus triformis, Rocky Cape, TAS, Photo: Rick Stuart-Smith
Distribution
Temperate Australasia
Description
Three large folds projecting from the shell. Unlike near relatives, the folds have a relatively even edge rather than projecting into spines. This murex occurs commonly among broken reef, seagrass and sand, where it is a voracious predator of small invertebrates.
Information
  • Max Size: 11 cm
  • Sea Temperature Range: 11.4-22.1°C
  • Depth: 0-40m
  • Habitat: Rocky Reef, Seagrass
Rarity
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Infrequent (8% of sites)
    Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
  • Abundance: Few (2 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney
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