Temat: nautiloid - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Concentrations of Silurian nautiloid cephalopods from Russia and Kazakhstan
Autorzy:: Bogolepova, O K
Holland, C H
Powiązania:: https://bibliotekanauki.pl/articles/22316.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Cephalopoda
cephalopod
Silurian
concentration
Russia
living population
Kazakhstan
paleontology
nautiloid cephalopod
Opis:: Silurian cephalopod limestones known from northern Asia are usually singular beds or horizons of nodules. They range in their taphonomic character from the Mojero river type, with postmortem concentration from rich living populations by relatively gentle bottom currents into a submarine low, to that of the Karabutak Formation of the South Urals, where there has been concentration by strong wave or current action.
Źródło:: Acta Palaeontologica Polonica; 1995, 40, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Campanian [Late Cretaceous] nautiloids from Sakhalin, Far East Russia
Autorzy:: Wilmsen, M
Yazykova, E.A.
Powiązania:: https://bibliotekanauki.pl/articles/20899.pdf
Data publikacji:: 2003
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Nautiloidea
nautiloid
Cymatoceras
Sakhalin
Cretaceous
Late Cretaceous
ammonite
Russia
Cymatoceras pseudoatlas
paleontology
invertebrate group
Opis:: Three nautiloid taxa, Cymatoceras pseudoatlas (Yabe and Shimizu, 1924b), C. cf. bifidum Shimansky, 1975, and C. cf. honmai Matsumoto and Miyauchi, 1983, are recorded from the Campanian of Sakhalin, Far East Russia. These are the first biostratigraphically well dated nautiloids from Sakhalin, which show close affinities to nautiloid faunas from Japan (Hokkaido), the two areas having formed part of a southerly palaeobiogeographical subprovince of the North Pacific Province. Possible relationships between shell form/ornament and preferred habitats of Late Cretaceous nautiloids are discussed. Coarsely ribbed (“cymatoceratid”), depressed nautiloids seem to predominate in nearshore environments. This may be regarded as an adaptive response to increasing predation pressure by durophages, especially in shallow water settings, which may have triggered the development of defensive morphologies (i.e., ornamented, predation−resistant shells) in Cretaceous shallow−water nautiloids.
Źródło:: Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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