Page 324 - Introduction to Paleobiology and The Fossil Record

SPIRALIANS 1: LOPHOPHORATES 311

Outcrop area
N T? L Lingula community
Anglesey G E Eocoelia community
Lingula sp.
P Pentamerus community
S Costistricklandia community
C Clorinda community
G Graptolitic muds
Eocoelia curtisi G T Turbidites
Shelf margin
Current direction
Land area
G
Cardigan Bay G
S
C Shropshire
P
Wenlock
Aberystwyth G
Pentamerus
0 50
oblongus L
km
G P
Presteigne E
C Malvern
Malvern
C Llandovery line
Haverfordwest L
E May Hill
Costistricklandia C
lirata alpha E P Rosemarket

LAND
Bristol Channel
Clorinda globosa

Figure 12.11 Lower Silurian depth-related paleocommunities developed across the Welsh and Anglo-
Welsh region. (Based on Clarkson 1998.)

Clastic 7
dykes Floating algae 1
4 5 2 Coarse Reef
Rocky Normal Normal littoral 3
sea-floor muddy sand-grade Lagoonal Reef
Transported 6 sediments sediments sediments detritus
shallow-water Dominantly sediments
material pelagic Coast with
sediments reefs
Coast without
reefs
Flysch-type
deposits
Unstable coastlines Normal coastlines
Figure 12.12 Mesozoic palaeocommunities developed across Alpine Europe. Numbers 1 to 7 refer to
the seven different biotypes described on the figure. (Based on Ager, D.V. 1965. Palaeogeogr.

Palaeoclimatol. Palaeoecol. 1.)