Title: WEBBASED DATABASES AND PALEOBIOGEOGRAPHY
1WEB-BASED DATABASES AND PALEOBIOGEOGRAPHY
ALLISTER REES
2ICEHOUSE WORLD
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4Glossopteris
5Permian phytogeographic patterns and climate
data/model comparisons Rees, P.M., Ziegler,
A.M., Gibbs, M.T., Kutzbach, J.E., Behling, P.J.
Rowley, D.B. (2002). The Journal of Geology,
110 1-31.
Simulations of Permian climate and comparisons
with climate-sensitive sediments Gibbs, M.T.,
Rees, P.M., Kutzbach, J.E., Ziegler, A.M.,
Behling, P. Rowley, D.B. (2002). The Journal
of Geology, 110 33-55.
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10Land-plant diversity and the end-Permian mass
extinction Rees, P.M. (2002). Geology, 30
827-830.
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18Jurassic
Cretaceous
Tertiary
Recent
Carb.
19HOTHOUSE WORLD
20JURASSIC
21LATE JURASSIC COALS, EVAPORITES AND DESERT SANDS
22LATE JURASSIC PLANTS
microphyllous conifers microphyllous
cycadophytes
macrophyllous cycadophytes
intermediate conifers
pteridosperms
ginkgophytes macrophyllous conifers
ferns sphenophytes
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25LATE JURASSIC PLANT DIVERSITY
26LATE JURASSIC COALS AND EVAPORITES
27LATE JURASSIC DINOSAURS
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29LATE JURASSIC DINOSAURS, PLANTS BY PALEOLATITUDE
30LATE JURASSIC SUMMARY (1) Higher latitudes
absence or paucity of dinosaurs, abundant coals,
high-diversity floras (with abundant
macrophylls) Lower latitudes regional
co-occurrence of dinosaurs with evaporites,
low-diversity floras (with abundant
microphylls) SOME TAPHONOMIC FACTORS Arid
and semi-arid climates longer residence times on
the surface for vertebrate remains, increasing
bone concentrations Humid climates bones
degrade more quickly. Higher precipitation
mobilizes more ions in the soil, leaching
surface materials (e.g. organic acids), leading
to lower pH of forest soils and dissolution and
destruction of bone. Vegetation mediates
exchange of water, minerals, and nutrients,
affecting soil chemistry. Plant roots can
adversely affect bone preservation through soil
leaching of mineral components, as well as
physical degradation. The interplay between
these factors will at least in part be
responsible for the destruction or preservation
of an animals remains. LATE JURASSIC SUMMARY
(2) This may explain why dinosaur bones are
scarce to non-existent in higher latitudes, where
climates were generally warm and wet, with broad
tracts of gymnosperm forests dominating the
landscape.
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32DATABASES HOME PAGE
33DINOSAURS AND PLANTS
34DINOSAURS AND PLANTS
35DATABASES HOME PAGE
36OVERVIEW
37OVERVIEW
38GEOGRAPHY
39GEOLOGIC AGE
40LITHOLOGIES
41LITHOLOGIES
42LITHOLOGIES
43FOSSILS
44FOSSILS
45VIEW DATA
46VIEW DATA
47VIEW DATA
48VIEW DATA
49VIEW DATA
50PALEOMAPS
51REFERENCES
52REFERENCES
53REFERENCES
54IT DETAILS
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