MARINE ENVIRONMENTS

Faunal Associations and Salinity

The fifteen foraminifera assemblages and their associated salinities correspond to various macrofaunal associations and ostracode assemblages.  The following table (Rodrigues), whose information was collected in the western basin of the Champlain Sea, portrays these relationships.

Paleosalinity for Microfaunal Assemblages and Macrofaunal Associations

Foraminiferal Assemblage

Macrofaunal Association

Microfossil Assemblage

Salinity of Bottom Water

#

Dominant Species

#

Dominant Species

#

Dominant Species

15

Elphidium sp.

Haynesina orbicularis

8

Mya arenaria

 -

None

Low (<15)

3

Macoma balthica

14

Elphidium sp.

Haynesina orbicularis

Elphidium clavatum

3

Macoma balthica

9

Cytheromorpha macchesneyi

8

Cytheromorpha macchesneyi

Heterocyprideis sorbyana

Sarsicytheridea punctillata

 

13

Elphidium clavatum

Haynesina orbicularis

Elphidium sp.

4

Hiatella arctica

6

Sarsicytheridea punctillata

Heterocyprideis sorbyana

Intermediate

(15-30)

3

Macoma balthica

8

Cytheromorpha macchesneyi

Heterocyprideis sorbyana

Sarsicytheridea punctillata

12

Elphidium clavatum

4

Hiatella arctica

7

Cytheropteron latissimum

Sarsicytheridea punctillata

2

Portlandia arctica

2

Cytheropteron pseudomontrosiense

11

Elphidium clavatum

Haynesina orbicularis

4

Hiatella arctica

9

Cytheromorpha macchesneyi

3

Macoma balthica

2

Portlandia arctica

4

Hiatella arctica

7

Cytheropteron latissimum

Sarsicytheridea punctillata

5

Mytilus edulis

-

None

2

Portlandia arctica

2

Cytheropteron pseudomontrosiense

10

Pateoris hauerinoides

Elphidium clavatum

2

Portlandia arctica

2

Cytheropteron pseudomontrosiense

9

Haynesina orbicularis

Elphidium clavatum

7

Mya truncata

-

None

5

Mytilus edulis

3

Macoma balthica

4

Hiatella arctica

7

Cytheropteron latissimum

Sarsicytheridea punctillata

8

Haynesina orbicularis

Elphidium clavatum

Eoeponidella pulchella

6

Macoma calcarea

-

None

4

Hiatella arctica

6

Sarsicytheridea punctillata

Heterocyprideis sorbyana

7

Elphidium clavatum

Elphidium incertum/asklundi

Haynesina orbicularis

4

Hiatella arctica

5

Sarsicytheridea punctillata

Cytheropteron nodosum

Heterocyprideis sorbyana

6

Haynesina orbicularis

Cassidulina reniforme

Elphidium clavatum

4

Hiatella arctica

-

None

3

Macoma balthica

5

Elphidium clavatum

Cassidulina reniforme

Haynesina orbicularis

4

Hiatella arctica

4

Cytheropteron nodosum

Cytheropteron inflatum

2

Portlandia arctica

3

Cytheropteron arcuatum

Palmenella limicola

2

Cytheropteron pseudomontrosiense

4

Cassidulina reniforme

2

Portlandia arctica

2

Cytheropteron pseudomontrosiense

High (30-34)

3

Cassidulina reniforme

Islandiella helenae

Haynesina orbicularis

4

Hiatella arctica

-

None

3

Macoma balthica

1

Balanus hameri

2

Cassidulina reniforme

2

Portlandia arctica

1

Cytheropteron paralatissimum

Cytheropteron arcuatum

Cytheropteron pseudomontrosiense

1

Cassidulina reniforme

Astrononion gallowayi

Islandiella norcossi

1

Balanus hameri

-

None

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