Environmental Engineering Reference
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FIGURE 5
Trace fossils and trace-fossil suites attributable to the
Nereites
Ichnofacies.
(A) Bedding-plane view with
Paleodictyon
. (B) Bedding plane with
Taphrhelminthopsis (
Scolicia
strozzii)
. (C) Bedding plane with
Spirorhaphe
. (D) Bedding plane with
Nereites
. (E) Muddy sand-
stone (BI
¼
5) with a suite consisting of
Chondrites
(
Ch
),
Zoophycos
(
Z
),
Spirophyton
(
Sp
), and
Cos-
morhaphe
(
Cr
). (F) Sandy mudstone (BI
¼
5) with a suite consisting of
Spirophyton
(
Sp
),
Cosmorhaphe
(
Cr
), and
Phycosiphon
(
Ph
). Scale in B is 5 cm long; all other scales are 3 cm long.
¼
Figure 4—cont'd (D) Bioturbated muddy sandstone (BI
5) with a suite consisting of
Scolicia
(
Sc
),
Thalassinoides
(
Th
),
Schaubcylindrichnus freyi
(
Sf
),
Phycosiphon
(
Ph
),
Palaeophycus heberti
(
Pa
),
Chondrites
(
Ch
), and
Asterosoma
(
As
). Scales are 3 cm long. NB: Recent ichnotaxonomic work sug-
gests that structures identified as
Cosmorhaphe
in this chapter are better regarded as
Nereites mis-
souriensis
(e.g.,
Angulo and Buatois, 2012
).
¼
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