Micromitra burgessensis
Phylum
Brachiopoda, Order Paterinata, Family Paterinatidae
Geologic
Time: Early Cambrian (~520 million years ago)
Size (25.4mm=1
inch): 1.5 mm long
Fossil
Site: Burgess Shale, Stephen Formation, Burgess Pass, British Columbia,
Canada
DThis
small brachipod is known as Micromitra burgessensisa, a member of
the inarticulate brachiopods Paterinidae They are a small group
of linguliforms that seem to be only distantly related to other
brachiopods. Several have been found attached to other organisms
like the sponge Pirania, indicative of an epibenthic lifestyle which
some researchers believe may have been a symbiotic relationship.
Note the ornate decoration to the shell, a distinctive feature of
the taxon.
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