By L. Cavin, A. Longbottom, M. Richter
This quantity, in honour of Peter L. Forey, is ready fishes as palaeobiogeographic signs within the Mesozoic and Cenozoic. The final 250 million years within the heritage of Earth have witnessed the break-up of Pangaea, affecting the biogeography of organisms. Fishes occupy just about all freshwater and marine environments, making them a great device to evaluate palaeogeographic models.The quantity starts with reviews of Triassic chondrichthyans and lungfishes, with reflections on Triassic palaeogeography. Phylogeny and distribution of past due Jurassic neoselachians and basal teleosts are broached, and are by means of 5 papers concerning the Cretaceous, facing SE Asian sharks, South American ray-finned fishes and coelacanths, eu characiforms, and international fish palaeogeography. Then six papers conceal Tertiary topics, akin to bony tongues, eels, cypriniforms and coelacanths.There is usually a superb healthy among fish phylogenies and the evolution of the palaeogeographical development, even supposing a number of discrepancies query information of present palaeogeographic types and/or a few features of fish phylogeny.Also to be had: Non-Marine Permian Biostratigraphy and Biochronology - ISBN 1862392064 CRETACEOUS-TERTIARY HIGH-LATITUDE PALAEOENVIRONMENTS - ISBN 1862391971 the applying of Ichnology to Palaeoenvironmental And Stratigraphic research - ISBN 1862391548The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society on the earth, and one of many greatest publishers within the Earth sciences.The Society publishes a variety of fine quality peer-reviewed titles for teachers and execs operating within the geosciences, and enjoys an enviable foreign popularity for the standard of its work.The many components within which we put up in include:-Petroleum geology-Tectonics, structural geology and geodynamics-Stratigraphy, sedimentology and paleontology-Volcanology, magmatic reports and geochemistry-Remote sensing-History of geology-Regional geology courses
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Extra resources for Fishes and the Break-up of Pangea - Special Publication no 295 (Special Publication)
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The structure of the pharyngeal teeth/denticles is identical with those figured in specimen UALVP 17936 (Eugeneodontida gen. et sp. ). Some of the pharyngeal teeth on arch 3 look like the one displayed in Figure 22, with a prominent central spike-like cusp and short lateral cusps, whereas most of the other teeth show 7 slender-oblong cusps projecting from a welldeveloped base. Slender and elongate, bar-shaped visceral elements are scattered between the clusters of pharyngeal teeth. Adjacent to what is interpreted to have been the hyoid-visceral area, are four large elements (one of which is very poorly preserved) that must have represented parts of the shoulder girdle.
In contrast, the lateral and distal posterior (lower and upper) jaw regions were well adapted to durophagous feeding habits. The variable degree of calcification in these remains does to some degree support the view of Zangerl (1981) that the lack of preserved skeletal remains in Late Palaeozoic forms could be due to lack of calcification, but we find no support for an evolutionary process favouring loss of calcification towards the end of the Palaeozoic. It is likely that partial calcification of head and anterior skeleton was also imperative for functions of jaws and associated levers in support of the presumed partly durophagous feeding habit.
The reconstruction of outlines of Pangaean ‘subcontinents’ and borders of Triassic marine habitats and their interconnections is problematic, eventhough continental plate movements following the break-up of the super-continent Pangaea (at the beginning of the Jurassic) are fairly well understood. It is generally assumed that (according to the theoretical computer fit, in which the relevant coastlines of today’s continents are displayed to match perfectly) there were no apparent seaways present, for instance, between the Americas and Africa or that there was no passage between the Proto-Atlantic and the west coast of central America connecting marine realms of the southern and northern hemisphere.