Temat: fossil behaviour - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Badenian (Middle Miocene) echinoids and starfish from western Ukraine, and their biogeographic and stratigraphic significance
Autorzy:: Radwański, A.
Górka, M.
Wysocka, A.
Powiązania:: https://bibliotekanauki.pl/articles/138877.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Asteroidea
Echinoids
taxonomy
new species
fossil behaviour
eco-taphonomy
Middle Miocene (Badenian)
Ukraine
jeżowce
taksonomia
nowe gatunki
skamielina
zachowanie
miocen środkowy
baden
Ukraina
Opis:: Echinoderms from the Badenian (Middle Miocene) of the Fore-Carpathian Basin of western Ukraine are facies restricted. The Mykolaiv Beds, stratigraphically older, yielded the starfish Astropecten forbesi (complete skeletons), two genera of sand dollars (Parascutella, Parmulechinus), and numerous other echinoids of the genera Psammechinus , Echinocyamus, Spatangus, Hemipatagus, Echinocardium, Clypeaster, Echinolampas, and Conolampas. The stratigraphically younger, calcareous Ternopil Beds yielded Eucidaris (complete coronae, isolated spines), Arbacina , Brissus, and Rhabdobrissus. Sixteen species of echinoids are distinguished and/or commented. A new brissid, Rhabdobrissus tarnopolensis sp. nov., is established. A mass occurrence of some species (Psammechinus dubius and Hemipatagus ocellatus) contrasts with that of mass aggregations (sand dollars and Echinocardium leopolitanum) by dynamic events in selected layers of proximal tempestites. Of special note is the occurrence of very small specimens, interpreted as juveniles (‘babies’) having been swept out of their restricted biotopes (‘nurseries’). Some species hitherto regarded as of Early Miocene age, and the problem of their persistence beyond the Fore-Carpathian Basin and/or migration into that basin during the Middle Miocene transgression are discussed.
Źródło:: Acta Geologica Polonica; 2014, 64, 2; 207-247
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: New information on scavenging and selective feeding behaviour of tyrannosaurids
Autorzy:: Hone, D.W.E.
Watabe, M.
Powiązania:: https://bibliotekanauki.pl/articles/20999.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: paleontology
new information
scavenging
feeding behaviour
tyrannosaurid
Dinosauria
Theropoda
Tarbosaurus
paleoecology
carnivore
predation
fossil record
Opis:: Feeding traces for carnivorous theropod dinosaurs are typically rare but can provide important evidence of prey choice and mode of feeding. Here we report a humerus of the hadrosaurine Saurolophus which was heavily damaged from feeding attributed to the giant tyrannosaurine Tarbosaurus. The bone shows multiple bites made in three distinctive styles termed “punctures”, “drag marks” and “bite−and−drag marks”. The distribution of these bites suggest that the animal was actively selecting which biting style to use based on which part of the bone was being engaged. The lack of damage to the rest of the otherwise complete and articulated hadrosaur strongly implies that this was a scavenging event, the first reported for a tyrannosaurid, and not feeding at a kill site.
Źródło:: Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The ground sloth Megatherium americanum: skull shape, bite forces, and diet
Autorzy:: Bargo, M S
Powiązania:: https://bibliotekanauki.pl/articles/23343.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Xenarthra
mastication
Megatherium americanum
behaviour
biomechanics
skull shape
morphology
dietary component
South America
diet
fossil
Megatherium
dietary habit
Pleistocene
fibrous food
Glossotherium robustum
Tardigrada
Bradypus variegatus
Opis:: Megatherium americanum (late Pleistocene of South America) has traditionally been regarded a herbivore, but its dietary habits have not been considered in terms of a morphofunctional analysis. This study describes and analyses the morphology of the masticatory apparatus in order to interpret the jaw mechanics of M. americanum, and thus to infer its diet and behaviour. The results are compared with those for the mylodontid Glossotherium robustum and the extant sloth Bradypus variegatus. The areas of origin and insertion of the masticatory musculature were reconstructed, and the moment arms generated by this musculature were estimated so that the mechanics of the feeding apparatus might be described. These analyses indicate that M. americanum was well adapted for strong and mainly vertical biting. The teeth are extremely hypsodont and bilophodont, and the sagittal section of each loph is triangular with a sharp edge. This suggests that the teeth were used mainly for cutting, rather than grinding, and that hard and fibrous food was not the main dietary component. The diet of M. americanum merits more rigorous analysis, but the evidence provided here indicates that it probably had a browsing diet in open habitats, but also could have fed on moderate to soft tough food.
Źródło:: Acta Palaeontologica Polonica; 2001, 46, 2
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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