Mackenzia definitions

Mackenzia

1) Burgess Shale animal
Found on https://www.crosswordclues.com/clue/mackenzia

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Mackenzia

Mackenzia is an elongated bag-like animal known from the Middle Cambrian Burgess Shale. It attached directly to hard surfaces, such as brachiopod shells. {gpb abundance|14|
Found on http://en.wikipedia.org/wiki/Mackenzia

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