Table 2. The minimum number of individuals (MNI) for each shellfish species and the weights for shellfish and ostrich eggshell in the Upper and Lower units at YFT1
Upper unit
Lower unit
Taxon MNI Weight, kg MNI Weight, kg
Granite limpet (Patella granatina) 499 11.835 236 4.9135
Granular limpet (Patella granularis) 16 0.129 36 0.223
Argenville's limpet (Patella argenvillei) 83 4.701 19 0.613
Bearded limpet (Patella barbara) 1 0.001 1 0.002
Pear limpet (Patella cochlear) 7 0.016 0 0.000
Pink-rayed limpet (Patella miniata) 5 0.041 2 0.035
Prickly limpet (Helcion sp[p.]) 21 0.004 60 0.005
Keyhole limpet(s) (Fissurellidae gen. et sp. indet.) 1 0.000 3 0.000
Slipper limpet (Crepidula sp[p.]) 16 0.006 26 0.007
Topshell(s) (Oxystele sp[p.]) 3 0.003 2 0.001
Pustular triton (Argobuccinum pustulorum) 1 0.002 0 0.000
Burnupena(s)/dogwhelk(s) (Burnupena sp[p.]/Nucella sp[p.]) 16 0.047 12 0.029
Plough shell(s) (Bullia sp[p.]) 5 0.009 0 0.000
Black mussel (Choromytilus meridionalis) 1,657 26.959 1,661 25.172
Ribbed mussel (Aulacomya ater) 30 0.061 37 0.086
White (sand) mussel (Donax serra) 34 0.205 105 0.812
Corrugated Venus (Venerupis corrugata) 3 0.001 4 0.003
Chiton (Polyplacophora gen. et sp. indet.) 3 0.001 1 0.000
Whale barnacle(s) (Coronula sp[p.]) 1 0.009 0 0.000
Other barnacle(s) (Buccinidae gen. et sp. indet.) 5 0.033 3 0.024
Ostrich eggshell (Struthio camelus) - 7.722 - 0.344