Home

Article Search

TABLE 1. Linear and volumetric mean values of Nesophontes natural and digital endocasts.

¹ Total cranium length range (minimum and maximum) taken from N. major (n = 24) and N. micrus (n = 12) from the same assemblage. * Estimated body mass calculated from the relationship y = 3.68x - 3.83, where y = log10 (body mass in grams), and x = log10 (skull length in mm) following Luo et al. (2001) and Rowe et al . (2011); EQ² formula from Jerison (1973), and EQ³ formula from Eisenberg (1981). Greater than (>) and less than (<) signs used are to indicate measurements on incomplete specimens. The number given after the sign is the minimum measurement that was taken on the specimen. The labels L (=left) and R (=right) are applied to the measurements of bilateral structures such as the olfactory lobes.

Measurement

N. micrus (C145)

N. major (C181)

N. major (C133)

N. micrus (C436)

 

Natural Endocasts Digital Endocasts

Cranium length (mm) from specimen

> 27.5

> 31.0

32.1

28

Cranium length min. (mm)¹

26.9

30.3

30.3

26.9

Cranium length max. (mm)¹

29.1

32.5

32.5

29.1

Estimated body mass (g)*

97.37

110.2

114.3

99.21

Estimated body length (mm)

≈ 110-135

≈ 120-140

≈120-140

≈ 110-135

y=Log10 value* (Body mass units)

1.99

2.04

2.05

2

x=Log10 value* (Cranial length)

1.44

1.49

1.51

1.45

Estimated endocast volume (ml)

> 0.76

1.09

0.888

1.231

Calculated endocast volume (ml) (from formula)

0.844

0.997

1.043

0.856

Endocast total length (mm)

> 14.48

> 15.18

15.2

14

Endocast total width (mm)

9.86

9.65

9.4

9.7

Olfactory bulb length (mm)

3.65 - 3.69

R 3.60

L 3.0 - R 3.1

incomplete

Olfactory bulb width (mm)

7 (both)

R 3.86

6.4 (both)

incomplete

Cerebellum length (mm)

5.97

4.58 - 5.22

6.2

5.9

Cerebellum width (mm)

7.45 - 8.4

7.32

7.7

7.4

Brain-Cranium length ratio

52.6

49

47.3

50

Encephalization Quotient (EQ)²

0.33

0.35

0.36

0.33

Encephalization Quotient (EQ)³

0.52

0.56

0.57

0.52

logo smallPalaeontologia Electronica
Webmaster
1998–2019
22 years of electronic palaeontology

PE is archived by CLOCKSS and LOCKSS programs.