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Table 1 Measurements of Sepiid cuttlebones arranged in different subgenera, showing ratios of different morphological features

From: Morphological disparity in extant and extinct sepiid phragmocones: morphological adaptions for phragmocone strength compared to those related to cameral liquid emptying hypotheses

 

Known maximum depth (m)

Mantle length (mm)

Width/length

Length of siphon/area of lost loculus

% last loculus/total area

Length of siphon/area of last loculus

% last loculus/total area

Acanthosepia

 S. stellifera

200

120

0.339

0.016

0.24777758

0.06274

0.24777758

 S. smithi

138

150

0.334

0.013

0.284545469

0.04581

0.28454547

 S. lycidas

100

380

0.336

0.015

0.356751892

0.04103

0.35675189

 S. brevimana

100

110

0.456

0.009

0.397916395

0.0238

0.39791639

 S. savignyi

50

190

0.38

0.007

0.417670274

0.01673

0.41767027

 S. cultrata

803

120

0.35

0.006

0.420648653

0.01342

0.42064865

 S. recurvirostra

140

170

0.287

0.009

0.460575349

0.01954

0.46057535

 S. whitleyana

128

 

0.37

0.005

0.472523984

0.00967

0.47252398

 S. esculenta

100

180

0.316

0.005

0.520144394

0.01032

0.52014439

 S. rozella

183

140

0.341

0.006

0.592817625

0.0107

0.59281763

Sepia

 S. zanzibarica

125

250

0.322

0.11

0.02693217

4.07948

0.02693217

 S. tuberculata

–

–

0.472

–

0.195675073

–

0.19567507

 S. probahari

100

130

0.329

0.014

0.339751092

0.04241

0.33975109

 S. bandensis

50

70

0.443

0.01

0.378875429

0.02641

0.37887543

 S. pharaonis

130

420

0.331

–

0.39541982

–

0.39541982

 S. ramani

100

375

0.281

0.012

0.428986858

0.02855

0.42898686

 S. papuensis

155

110

0.32

0.007

0.447618688

0.01549

0.44761869

 S. hierredda

100

500

0.309

0.009

0.458652092

0.01995

0.45865209

 S. plangon

83

135

0.285

0.011

0.487355363

0.02283

0.48735536

 S. vermiculata

290

287

0.386

0.006

0.498728265

0.01255

0.49872826

 S. grahami

84

82

0.451

0.005

0.545447934

0.00935

0.54544793

 S. simonniana

–

–

0.374

0.001

0.558504808

0.00116

0.55850481

 S. elobyana

–

53

0.365

0.006

0.569278109

0.01007

0.56927811

 S. elliptica

142

175

0.381

0.005

0.586393149

0.00839

0.58639315

 S. latimanus

30

500

0.275

0.005

0.612875219

0.00803

0.61287522

 S. officinalis verm

–

–

0.331

0.001

0.641126918

0.00172

0.64112692

 S. officinalis

200

490

0.294

0.005

0.641608779

0.00803

0.64160878

 S. apama

100

500

0.431

0.006

0.669212788

0.00928

0.66921279

 S. bandensis

       

Rhombosepia

 S. elegans

500

72

0.268

0.01

0.241716749

0.04213

0.24171675

 S. hierornis

–

–

0.392

–

0.278139121

–

0.27813912

 S. orbignyana

570

120

0.259

0.01

0.278682579

0.0351

0.27868258

 S. madokai

200

100

0.329

0.008

0.372213483

0.02098

0.37221348

 S. sulcata

404

97

0.289

0.007

0.399168231

0.01776

0.39916823

 S. hedleyi

1100

83

0.378

0.007

0.49543419

0.01373

0.49543419

Anomalosepia

 S. australis

345

85

0.29

0.018

0.134320913

0.13458

0.13432091

 S. omani

210

100

0.264

0.005

0.445989493

0.01115

0.44598949

Doratosepia

 S. trygonina

410

140

0.195

0.011

0.210641424

0.05409

0.21064142

 S. bertheloti

156

175

0.248

–

0.23076413

–

0.23076413

 S. kobiense

200

90

0.201

0.011

0.235882452

0.04847

0.23588245

 S. prashadi

200

140

0.261

0.008

0.350295697

0.0236

0.3502957

 S. vossi

140

100

0.292

0.008

0.358668649

0.02334

0.35866865

 S. opipara

184

150

0.295

0.008

0.384575282

0.02137

0.38457528

 S. braggi

86

80

0.202

0.007

0.396286439

0.01703

0.39628644

 S. vietrnamica

104

70

0.226

0.006

0.464228268

0.01363

0.46422827

 S. lorigera

300

250

0.21

0.006

0.467224547

0.01268

0.46722455

 S. arabica

272

88

0.156

0.006

0.566749124

0.01116

0.56674912

 S. andreana

50

120

0.222

0.007

0.578033004

0.01291

0.578033

 S. longipes

300

250

0.23

0.007

0.619835128

0.01057

0.61983513

Sepiella

 S. japonica

50

 

0.294

0.009

0.411410711

0.02108

0.41141071