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Table 1 Apical cap of Wirenia argentea, test cell numbers and characteristics

From: Of tests, trochs, shells, and spicules: Development of the basal mollusk Wirenia argentea (Solenogastres) and its bearing on the evolution of trochozoan larval key features

Cell position

(tier)

Number of

cells/row

Number of

cilia/cell

Length of

cilia (μm)

Arrangement

of cilia

  

Apical

?

3 × (15-20)*

40-50

tuft

  

Pretrochal 1

6-8

numerous

10-15

scattered

  

Pretrochal 2

8-10

numerous

10-15

scattered

  

Prototrochal

14-16

6 × (20-25)*

25-35

adapical row

  

Posttrochal 1

10-12

numerous

10-15

scattered

  

Posttrochal 2

12-14

numerous

10-15

adapical row

  

Posttrochal 3

2

30-40

10-15

tuft

  
  1. * Arranged as compound cilia (cirri).
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Frontiers in Zoology

ISSN: 1742-9994