Geology Reference
In-Depth Information
Fig. 10.43.
Oolitic gastropod-bivalve grainstone
. Gastropods are represented by
Holopella gracilior
Schauroth. The skeletal
grains have thin oolitic coatings exhibiting a reddish color. This microfacies is widely distributed in Early Triassic platform
carbonates and known from the Alpine-Mediterranean region (see Pl. 89/1) to Iran and China. Early Triassic (Scythian):
Subsurface, Precaucasian foredeep, Russia. Scale is 1 mm.
Strausz, L. (1959): Über Gastropoden-Gehäuseschnitte. -
Acta Geologica Budapest,
6
, 219-229
Weedon, M.J. (1990): Shell structure and affinity of vermi-
form 'gastropods'. - Lethaia,
23
, 297-309
Further reading:
K124
Marine species are predominantly benthic herbivores
and detritus feeders, some species are carnivore. Plank-
tonic pteropods and heteropods known since the Early
Tertiary contribute to the formation of aragonitic muds
in the deep sea.
Basics: Gastropods
Bandel, K.J. (1990): Shell structure of Gastropoda exclud-
ing Archaeogastropoda. - In: Carter, J.G. (ed.): Skeletal
biomineralization: patterns, processes and evolutionary
trends. Volume I. - 117-134, New York (Van Nostrand)
Dreesen, R., Jux, U. (1995): Microconchid buildups from
Late Famennian peritidal-lagoonal settings (Evieux For-
mation, Ourthe Valley, Belgium). - Neues Jahrbuch für
Geologie und Paläontologie, Abhandlungen,
198
, 107-
121
Herman, Y. (1978): Pteropods. - In: Haq, B.U., Boersma,
A. (eds.): Introduction to marine micropaleontology. -
151-159, New York (Elsevier)
Moore, R.C., Pitrat, C.W. (eds., 1960): Mollusca 1 (Mol-
lusca general features, Scaphopoda, Amphineura, Mono-
placophora, Gastropoda general features, Archaeogastro-
poda, mainly Palaeozoic Caenogastropoda and Opistho-
branchia). - Treatise on Invertebrate Paleontology, part
I, 351 pp., Lawrence (Geological Society of America)
Although this picture is only included to fill this page, it can
tell a story about a sculptured gastropod. Please continue!
Triassic: Carinthia, Austria.
