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Molluscs of Tasmania

Mactridae – Mactrinae: Mactrotoma (Mactroderma) antecedens (Iredale, 1930) (‘oval trough-shell’)

Synonym(s): antecedens Iredale, 1930 flindersi Cotton & Godfrey, 1938.

Typical shell-length 40 mm. Lives subtidally in sand in moderately sheltered environments. Native. Endemic to southern and eastern Australia (QLD, NSW, TAS, VIC and SA). In Tasmanian waters, this is a widespread species but seldom common, though more predictably so in the SE.


Class: Bivalvia
Subclass: Heterodonta
Order: Veneroida
Superfamily: Mactroidea
Family: Mactridae
Subfamily: Mactrinae
Genus: Mactrotoma

Localities for Mactrotoma antecedens

Beaumaris: Shelly Point
Blackmans Bay
Black River Beach
Black River Beach: northern end
Boltons Beach
Bridport: Adams Beach
Bridport: beach
Bridport: St Albans Bay
Cape Portland: Boobyalla Beach
Cape Portland: Lemons Beach
Cape Portland: Petal Point
Cape Portland: Roses Bay
Carlton Beach: Spectacle Island
Carlton: Park Beach
Clifton Beach (unlocalised)
Coles Bay: Parsons Cove
Coles Bay: Richardsons Beach
Cremorne: foreshore
Davey River: Carvers Point
Derwent Estuary: ACMA Asterias survey Stn 23
Devonport: Coles Beach
Dodges Ferry: Red Ochre Beach
Dover: beach
Dover: Kents Beach
East Devonport: Moorland Beach
East Devonport: Pardoe Beach
East Devonport: Pardoe Point
East Ulverstone
East Ulverstone: Buttons Beach
Electrona: Peggys Beach
Flinders Island: Fotheringate Beach: southern end
Flinders Island: Northeast River: mouth
Frederick Henry Bay (unlocalised)
Freycinet Peninsula: Hazards Beach
Greens Beach: main beach
King Island: Sea Elephant Bay: Cowper Point
Kingston Beach
Lauderdale: Roches Beach
Lauderdale: Seven Mile Beach
Lime Bay: Green Head
Little Musselroe Bay: Lyme Regis Lagoon
Little Musselroe Bay: northern end
Little Swanport: Saltworks Beach
Low Head (unlocalised)
Marion Bay: Bream Creek foreshore
Mayfield Beach to Mayfield Point
Mayfield Point to Little Christmas Island
Midway Point (unlocalised)
Narawntapu: Bakers Beach
Narawntapu: Griffiths Point
Nine Mile Beach & Dolphin Sands
Norfolk Bay: Lime Bay: ACMA Asterias survey Stn 19
North Bruny Island: Nebraska Beach
Nubeena: White Beach
Orford (unlocalised)
Port Davey: Bond Bay
Port Sorell: beach
Schouten Island: Crocketts Bay
Shearwater: Freers Beach
Sloping Lagoon: Lagoon Beach
Sloping Main Beach
Sloping Main: Black Jack Point
Snug Beach
South Arm: Fort Beach
South East coast of Tasmania (unlocalised)
Stanley: foreshore
Swansea: Coswell Beach
Swansea: Jubilee Beach
Swansea: Kelvedon Beach
Swansea: Kennedia Beach
Swansea: Meredith River: mouth
Swansea (unlocalised)
Swanwick: foreshore
Taroona: Alum Cliffs
Taroona Beach
Taroona: Dixons Beach
Taroona: Hinsby Beach
Tasmania (unlocalised)
Turners Beach
Walker Island
Waterhouse Beach
West Ulverstone: foreshore

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