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Table 2 Ossicles of Cyrtocrinus praenutans n. sp. in the different beds sampled

From: Crinoids from the Middle Jurassic (Bajocian–Lower Callovian) of Ardèche, France

Type of ossicle

Pouza 1

Pouza 1 observed/expected

Pouza 2

Pouza 2 observed/expected

Pouza 3

Pouza 3 observed/expected

Pouza 1–3 (total)

Pouza 1–3 observed/expected

Total including small fraction (Appendix 2)

Pouza total observed/expected

Cups and radialsa

1,039

1.0

909

1.0

495

1.0

2,443

1.0

2,443

1.0

Topmost columnals

1,092

1.1

511

0.6

211

0.4

1,814

0.7

1,814

0.7

Columnals

3,882

n.a.

1,971

n.a.

2,095

n.a.

7,948

n.a.

7,990

n.a.

Attachment discs

428

0.4

313

0.3

328

0.7

1,069

0.4

1,069

0.4

First primibrachials

2,039

0.4

760

0.2

322

0.1

3,121

0.3

4,165

0.3

Second primibrachials

6,975

1.3

2,551

0.6

1,352

0.5

10,878

0.9

11,921

1.0

Secundibrachials

28,674

n.a.

9,065

n.a.

7,647

n.a.

45,386

n.a.

58,744

n.a.

Total

44,129

 

16,080

 

12,450

 

72,659

 

88,146

 
  1. n.a. not applied
  2. aCalculated as complete cups