EMUELLA POLYMERA

Derivation of name: Emuella - from Emu Bay, Kangaroo Island, South Australia.

Polymera - for numerous thoracic segments.

E. polymera is distinguished from B. dailyi in having a shorter palpebral lobe and slightly different facial sutures. The overall cranidium is slightly shorter with long genal spines.

The thorax in E. polymera; the axis is wider than in B. dailyi, being more than half thoracic width, almost parallel sided to the fourth segment then tapers evenly to posterior, moderately to gentle convex, axial furrows distinct.

Pleurae very short with pleural spines. Pleural furrow terminates before pleural spines. (In B. dailyi pleural furrow terminates at base of pleural spines)

The thorax can have 48 and known maximum of 58 segments. (B. dailyi thorax can have 53 -61 segments)

Strong, closely spaced granules on dorsal surfaces.

ALL SPECIMENS ARE EMUELLA POLYMERA

( 15 MM. )

 

( 16 MM. )

( 14 MM. )

( 16 MM. )

( 14 MM.)

( 15 MM. )

 

This reconstruction of Emuella polymera was created by Sam Gon III.

It shows the main features distinguishing E.polymera beautifully.

Many thanks to Sam for allowing me the use of his good work.

 

 

 

 

 

 

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