ESTAINGIA BILOBATA (ADULTS) 20MM

 

 

ESTAINGIA BILOBATA (ADULTS) 23MM

 

In the Juvenile stage the Estaingia have a longer genal spine in relation to their size. (This one being 4mm in length)

They also possess a long pleural spine on the 2nd thorasic segment, which is absent or greatly reduced in the Adult.

Reconstruction of the ontogeny of Estaingia bilobata, (meraspid).

(Size 2mm to 5mm)

 

 Reconstruction of Adult E. bilobata ( holaspid ).

This drawing kindly supplied by Sam Gon III.

Estaingia is believed to be ancestral to Xystridura. ( From the Middle Cambrian of the Northern Territory. )

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