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Wyszukujesz frazę "Snail" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Traces of cassid snails predation upon the echinoids from the Middle Miocene of Poland: Comments on Ceranka and Zlotnik [2003]
Autorzy:
Donovan, S K
Pickerill, R.K.
Powiązania:
https://bibliotekanauki.pl/articles/23250.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
gastropod
cassid snail
fossil
Polska
Middle Miocene
echinoid
snail
Echinocyamus linearis
paleontology
Opis:
Small round holes in the tests of fossil echinoids present problems of interpretation, the most obvious questions being who did it and why? Both have been the cause of considerable conjecture by ichnologists and echinoderm palaeontologists. “Drill holes” described from the Miocene of Poland in the echinoid Echinocyamus linearis Capeder are classified within the ichnospecies Oichnus simplex Bromley. Contrary to the original analysis, the possibility remains that some of these holes were the result of eulimid parasitism rather than predation by juvenile cassids. If other, larger echinoids in the fauna suffered predation by adult cassids, then the available samples are probably too small for it to be recognised.
Źródło:
Acta Palaeontologica Polonica; 2004, 49, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-snail infestation of Devonian crinoids and the nature of platyceratid-crinoid interactions
Autorzy:
Baumiller, T K
Powiązania:
https://bibliotekanauki.pl/articles/20265.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
USA
Silica Formation
Devonian
platyceratid-crinoid interaction
biotic interaction
crinoid
snail
Middle Devonian
paleontology
Ohio
Opis:
The well−known association of platyceratid snails and crinoids typically involves a single snail positioned on the tegmen of the crinoid host; this has led to the inference of coprophagy. Two specimens of the camerate crinoid Arthroacantha from the Middle Devonian Silica Formation of Ohio, USA, exhibit numerous snails on their tegmens. On one of these, 6 platyceratid juveniles of approximately equal size are found on the tegmen. On the second crinoid, the largest of 7 infesting platyceratids occupies the typical position over the anal vent while others are either superposed (tiered) upon it or are positioned elsewhere on the tegmen. These specimens illustrate that platyceratids (1) settled on crinoids as spat, (2) were not strictly coprophagous during life yet (3) benefited from a position over the anal vent.
Źródło:
Acta Palaeontologica Polonica; 2002, 47, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Traces of cassid snails predation upon the echinoids from the Middle Miocene of Poland
Autorzy:
Ceranka, T
Zlotnik, M.
Powiązania:
https://bibliotekanauki.pl/articles/21308.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
gastropod
Miocene
Polska
Cassidae
morphology
identification
predation
fossil echinoid
Middle Miocene
echinoid
population structure
snail
paleontology
Opis:
Drill holes on tests of Echinocyamus linearis from the Middle Miocene Korytnica Basin represent the first well documented fossil record of cassid predation from Poland. These traces complement the ecological information on the size and structure of cassid populations recorded by body fossils. The high number of drill holes recognised from the Heterostegina Sands, the uppermost part of the Korytnica depositional sequence, indicates the occurrence of a large cassid population during the late stage of development of the Korytnica Basin. The small size of most of the drill holes indicates that juvenile gastropods of the family Cassidae, which are not preserved in the fossil record of the investigated area, were also present in the cassid populations.
Źródło:
Acta Palaeontologica Polonica; 2003, 48, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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