Table 1 Summary of sequence alignment and phylogenetic signals for individual genes and concatenated datasets. Bootstrap proportion (BP) and transfer bootstrap expectation (TBE) are shown as percentages for each clade; bold letters denote significant support (≥ 80%); N, not recovered in best ML tree; NA, not applicable. Sensitivity analyses were run with three additional lower heterobranchs (w/AA) or without Rhodopidae (wo/Rho) or Murchisonellidae (wo/Mur). See Supplementary Figs. S1 and S2.

From: Origin and significance of two pairs of head tentacles in the radiation of euthyneuran sea slugs and land snails

 

Nuc rRNA

MtDNA

All (4 genes)

Sensitivity analyses

18S

28S

(18S + 28S)

16S

COI

(16S + COI)

w/AA

wo/Rho

wo/Mur

Number of taxa

47

50

51

50

49

51

52

55

50

50

Total length (MAFFT)

2474

1640

4114

522

657

1179

5293

5787

5216

5232

Final alignment (Gblocks)

1689

947

2636

336

657

993

3629

3618

3644

3628

Variable sites

620

594

1214

223

417

640

1854

2025

1851

1799

Parsimony informative

417

497

914

209

377

586

1500

1740

1497

1464

Clade, BP/TBE (%)

 Tjaernoeioidea nov

100/100

100/100

100/100

97/94

100/100

98/90

100/100

100/100

100/100

100/100

 Rhodopidae

93/93

94/87

84/86

92/82

(NA)

74/59

90/87

94/93

(NA)

100/100

 Murchisonellidae

(NA)

100/100

100/100

96/81

N/N

93/90

100/100

100/100

100/100

(NA)

 Allomorpha

(NA)

74/77

68/79

N/N

N/88

48/N

96/98

88/96

(NA)

(NA)

 Mesoneura nov

N/N

69/74

54/72

N/N

77/93

N/73

96/93

64/83

83/93

78/64

 Euthyneura

N/N

36/69

40/74

N/N

95/99

93/99

100/100

95/98

91/95

97/98

 Tetratentaculata nov

N/N

N/N

36/62

N/N

53/84

N/74

97/96

49/74

89/92

63/81