Ostracods

1
Ostracods
2
Ostracod 1
Cyprinotus (Heterocypris) sp.
Whole specimen
Outline red pigment area sometimes difficult to
see
Elongated, glossy, no obvious bristles,
transparent, red pigment under the shell, size
.8mm (.74x.37 mm) often in brackish or salt
water
3
Ostracod 2
Cytheromorpha sp. 1
Side (top) and Dorsal (left) views
White spots
Opaque, .5 mm in length, shell with bulges,
white dots on the surface, the shell often with
purple-greenish tint in preserved animals,
distinct reticulated patterns
4
Ostracod 4
Candona sp.
Glossy, strong bristles, transparent, 1.5 mm
long (1.1x.57 mm), furca with distinct comb of
long teeth
Long furca
Most natural shape
5
Ostracod 5
Cypricercus sp.
The specimen above has been somewhat squashed
and made taller
Glossy, semitransparent, flattened body, .8 mm
long,
Distinct bump
6
Ostracod 5A
Cypridopsis cf. mariae Rome
The drawn specimens shape exaggerates its
features
Green-bluish tint, thick body,
Small bump
7
Ostracod 6
Potamocypris sp.
Glossy, faint bristles, transparent, .6 mm long,
left shell longer than right (better shown in the
drawing below)
Distinct lip
Side view, partly open
Longer shell
8
Ostracod 7
Several individuals found in Pool 15/50 (the
picture is of a specimen from another pool)

• Characteristic features
• Rounded front
• Tapering rear end (to varying degrees?)
• Flat ventral profile

9
Ostracod 8
Samples 37, 41
Size .8 mm
Dorsal view
10
Ostracod 8A
Sample 104/250 Date Jan 2002

• Characteristics include
• The highest point of the shell at about 1/3 shell
  length from the front
• Fairly narrow end
• Straight sloping of the dorsal side and straight
  ventral side.

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Ostracod 9
Cytheromorpha sp. 2
Antennae
Size .5 mm, often purple in color, some
similarity to Ost 2. White spots on the shell,
protruding lip on the front ventral side
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Ostracod 10 Ostracod 16
A very small species, v. broad posterior, white
spots. Three pairs of drawings
Pool 24
Pool 16
13
Ostracod 11
.5 mm, Pool 12/50
White band across the body trapezoid shape from
top view
Small teeth
14
Ostracod 12
Very small - .2 mm, side and dorsal views
Pool 12/50
15
Ostracod 13
Pool 50/50 marine habitat
Cyprideis sp.
Rich reticulated lattice .7 mm long
Two projections (one less prominent and visible
16
Ostracod 14
Pool 12/50 1 mm in length, shell circular in
optical cross section, sausage like, bristles,
white spots
17
Ostracod 15
Pool 12/50
Very flat, .7 mm long, smooth surface one
specimen only
18
Ostracod 17
Pool 12/50 49/50 June 97
.8 mm long glossy, medium thick
Side view
Dorsal view
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Ostracod 21
Pool 31/50
.75 mm long
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Ostracod 22
Sample 104 .. Date Jan 2002

• Characteristics include
• Long hairs
• Pointed and bent rear end
• Ship-bow shaped front

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Ostracod 23
Pool 7/50 Jan 1992
Lateral and dorsal views
22
Ostracod 24
Shell thickening
Sample 104 Date Jan 2002
Shell thickening

• Characteristics include
• Thick shell
• Similar in shape to 7A but
• There is a thicker shell in the middle of the
  body forming a vertical band
• Numerous fine hair.

Dorsal view