3 results match your criteria Acta Palaeontologica Polonica[Journal]

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The completeness of the fossil record of plesiosaurs, marine reptiles from the Mesozoic.

Acta Palaeontol Pol 2017;62(3):563-573

School of Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom.

Plesiosaurs were a highly successful group of marine reptiles occurring worldwide in the Jurassic and Cretaceous, but to date few studies have focused on their preservation through time. Here, we conduct the first detailed assessment of the quality of the plesiosaur fossil record. Data was compiled for 178 specimens representing 114 valid species. Read More

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January 2017

Deep-water fossorial shrimps from the Oligocene Kiscell Clay of Hungary: Taxonomy and palaeoecology.

Acta Palaeontol Pol 2014;59(4):947-965

[ ], Department of Palaeontology and Geology, Hungarian Natural History Museum, Ludovika tér 2, Budapest H-1088, Hungary.

We describe deep-water ghost shrimp assemblages from the otherwise well known Oligocene Kiscell Clay in Hungary. The described fossorial shrimps (Decapoda: Callianassidae and Ctenochelidae) include: (younger synonym ) and (younger synonym ). The fossil material of the former species is assigned to based on the morphology of the major cheliped, particularly the pectinate fingers, bulbous propodus, cup-shaped carpus and elongated merus. Read More

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January 2014

Limits to randomness in paleobiologic models: the case of Phanerozoic species diversity.

J J Sepkoski

Acta Palaeontol Pol 1994 ;38(3-4):175-98

Department of the Geophysical Sciences, University of Chicago, Illinois 60637, USA.

The question of how random, or unconstrained, paleobiologic models should be is examined with a case study: Signor's (1982, 1985) inverse calculation of levels of marine species diversity through the Phanerozoic. His calculation involved an ingenious model that estimated species numbers and species abundances in the world oceans of the past by correcting known numbers of fossil species for variations in sedimentary rocks available for sampling and in effort paleontologists might devote to sampling. The model proves robust to changes in possible shapes of species-abundance distributions, but it is sensitive to alterations in the assumption that paleontologists collect fossils at random. Read More

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September 1997
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