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Lego
Block
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Trace
Maker
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Sea
anemone |
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Trace
Name
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Bergaueria
perata sp.
BERG-AIR-EE-A PER-A-TA |
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Age
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Silurian
Period
(About 415 million years old) |
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Where
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Cape
George (near Arisaig), Nova Scotia |
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Cast
or Mold
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Cast |
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Collector
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Dr.
Ron Pickerill, University of New Brunswick, Fredericton |
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The
specimen has four to five complete and partial resting-dwelling
traces of sea anemones. Remember that this is a cast, so the
"real" trace would have been a series of small holes
in the sea floor.
Because there are several traces preserved close together, they
have been interpreted to have resulted from "reproductive
gregariousness" -- the ability of sea anemones to create
offspring very quickly. Palaeontologists are still arguing about
whether these traces are dwelling or resting traces. Do you
have an opinion? |
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