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TABLE 1. Measurements for all specimens in micrometers with reference to appearance on certain figures. Brackets indicate uncertainties in assignment to certain size class or in measured values due to weak preservation. Specimen AUGD 12445C is mentioned, as it was documented and received a number, but later turned out as not being part of a crustacean. Numbers in first row mean: 1 = Figure; 2 = Repository number AUGD; 3 = Size class; 4 = Diameter of mandibular exopod (d1); 5 = Diameter of antennal exopod (d2); 6 = Diameter of exopod with unclear affinities; 7 = Diameter of antennal endopod (d3); 8 = Diameter of mandibular endopod; 9 = Height of antennal coxa in proximal-distal axis (h); 10 = Length of antennal coxa in median-lateral axis (l).

1

2

3

4

5

6

7

8

9

10

5.1

12449B

III

61

61

44

18

71

139

5.2

12448A

II

50

46

27

61

96

5.3–5

12449A01

(II)

44

17

6.1

12448B

II

37

41

27

16

6.2

12449C

II

44

42

27

51

94

6.3

12449A25

I

35

35

24

14

6.4

12449A02

III

61

53

35

78

114

6.5(left)

12449A03a

II

39

45

28

18

55

84

6.5(right)

12449A03b

II

43

45

29

21

58

84

6.6

12449E

I

31

31

18

31

68

6.7–8

12449A04

III

57

32

64

131

7.1

12445D

II

43

51

23

73

106

7.2

12449A20

II

41

28

61

94

7.3

12449A18

I

36

23

51

64

7.4

12451F

II

45

45

65

96

7.5

12447C

I

32

19

50

62

7.6

12447A

II

46

29

65

 

7.7

12449A22

II

46

20

8.1(bottom)

12449A05a

II

43

23

8.1(top)

12449A05b

II

41

28

64

110

8.2

12449A06

(II)

41

8.3

12449A08

I

36

15

8.4

12449A16

I

34

34

46

90

8.5

12449A09

III

51

33

8.6

12449A14

I

32

43

85

8.7

12449A19

II

46

44

25

108

8.8

12447B

II

41

25

71

99

8.9

12454C

II

45

49

106

9.1

12452B

(I)

28

18

9.2

12449A21

(II)

47

9.3

12449A10

(II–III)

53

9.4

12451B

I

28

15

9.5

12447F

?

45

9.6

12449G

(II)

44

9.7

12454F

(II–III)

52

9.8

12442E

(II)

43

9.9

12454D

?

9.10

12451C

II

59

83

9.11

12449A15

II

42

106

10.1

12442B

I

25

68

10.2

12445A

(II)

39

10.3

12447E

?

10.4

12447D

(III)

60

10.5

12444B

(II)

44

10.6

12448E

(II)

39

10.7

12448F

(III)

61

10.8

12449A23

(I)

25

10.9

12454G

(I)

(31)

10.10

12454I

(I)

(16)

10.11

12454B

(II)

39

10.12

12454H

(II–III)

52

10.13

12451D

(III)

53

11.1

12454E

(I)

25

11.2

12442D

(II)

41

11.3

12448G

(II)

45

11.4

12454A

III

55

57

11.5

12451A

I

34

36

22

13

49

78

11.6

12445F

II

41

27

61

102

11.7

12449A17

II

44

46

25

11.8

12449A11

II

43

20

61

112

11.9

12449A07

II

47

45

33

14

12.1

12451G

I–II

36

41

92

12.2

12449D

(II–III)

55

12.3

12449A13

(II)

39

12.4

12448C

(II)

51

12.5

12449F

I

25

25

19

28

55

12.6

12449A12

(II–III)

54

12.7

12452A

(III)

59

12.8

12449A24

I

33

19

70

12.9

12451E

(I)

17

13.1

12442A

(II)

49

13.2

12444A

(II)

65

99

13.3

12442C

II

45

41

13.4

12448D

I

32

31

64

13.5

12445E

(II)

41

13.6

12448H

III

63

33

80

133

13.7

12445B

(II)

49

13.8

12447G

III

65

39

65

139

13.9

12442F

I

35

25

41

78

not a crustacean

12445C

TABLE 2. Overview of the most important measurement data in µm. Lengths of entire appendages or of exopods and endopods always without terminal setae. Question marks indicate uncertainties due to preservational constraints; dashes mark unavailable data.

Value

Stage I

Stage II

Stage III

total anterior-posterior body length

 150

 225

 300

maximum body width (excl. appendages)

 160

 185

 270

maximum dorso-ventral body height

 90

 145

 205

antennula length

 90

150?

antenna length

 190

 270

370

antennal coxa, medio-lateral extension

 75

 105

 135

antennal coxa, maximum proximo-distal height

 40

 60

 75

antennal endopod length

 60

 80

 110

antennal exopod length

 160

 205

 280

mandible length

170?

 220

 280

mandibular coxa, medio-lateral extension

 45

 53

mandibular coxa, maximum proximo-distal height

60?

75?

mandibular endopod length

14?

18?

20?

mandibular exopod length

 130

 165

 205

TABLE 3. Comparative data from the first larval stage (nauplius) of selected eucrustacean species; data source given in brackets for each species separately. I. Data of the nauplius described herein. II. Rehbachiella kinnekullensis Müller, 1983 (Branchiopoda) from the Cambrian 'Orsten' of Sweden (Walossek, 1993). III. Artemia sp. from Macau strain, north-eastern Brazil (Schrehardt, 1987). IV. Bryocamptus pygmaeus (Sars, 1862) (Copepoda, Harpacticoida) from fresh water of NW Germany (Dahms, 1987). V. Pseudotachidius sp. (Copepoda, Harpacticoida) from Weddell Sea (Dahms, 1989). VI. Eudiaptomus gracilis (Sars, 1863) (Copepoda, Calanoida) from fresh water of Bavaria, Germany (unpublished data of M. Mayer in the workgroup of D. Waloszek). VII. Monstrilla hamatapex Grygier and Ohtsuka, 1995 (Copepoda, Monstrilloida) from adjacent to Tanabe Bay, Japan (Grygier and Ohtsuka, 1995). VIII. Laura bicornuta Grygier, 1985 (Ascothoracida) from Hawaii (Grygier, 1985). IX. Hansenocaris furcifera Itô, 1989 (Facetotecta) from Tanabe Bay, Japan (Itô, 1990). X. Briarosaccus tenellus Boschma, 1970 (Cirripedia, Rhizocephala) (Walossek et al., 1996). XI. Euphausia superba (Dana, 1852) (Euphausiacea) from Antarctic waters (Fraser, 1936). XII. Macropetasma africanum (Balss, 1913) (Decapoda, Penaeoidea) from off the coast along southern Africa (Cockcroft, 1985). ? = data uncertain or unknown.

Value

I

II

III

IV

V

VI

VII

VIII

IX

X

XI

XII

total length

 150

160

350

80

235

135

50

440

280

320

650

250

total width

 160

?

120

65

 200

 75

 32

280

 170

 200

 480

130

antennula number of elements

 6

?

 1

 3

 3

 2

 3

 5

 2

 3

 1

 1

antennula length

?

?

 50

 25

 50

 80

 12

 180

 40

 130

 300

 200

antenna length

 190

 100

 200

 60

 100

 100

 15

 200

 80

 155

 320

 200

antennal endopod number of elements

 3

 4

 1

 1

1

1

 2

 3

 2

 1

 1

 1

antennal endopod length

 60

 60

 60

 40

30

23

 10

 100

 25

 75

 60

 150

antennal exopod number of annuli

 12

7–8

6–8

2

5

7

 4

8–9

 6

 8

 1

 1

antennal exopod length

 160

 70

 80

 20

50

 52

 8

130

45

90

 60

 160

mandible length

170?

 85

 60

 25

 60

 50

 12

 180

 80

 100

 300

 100

mandibular endopod number of elements

 1

 3

 1

 1

 1

 1

1?

 3

 2

 1

 1

 1

mandibular endopod length

14?

 45

 10

 10

 10

 23

10?

 100

 25

 30

 60

 70

mandibular exopod number of elements

 7

 7

 1

 2

 2

 5

 1

 7

 5

 6

 1

 1

mandibular exopod length

 130

 50

 10

 20

 25

 24

 3

 110

 40

 55

 60

 70

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