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all geography including DSDP/ODP Sites and Legs
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GeoRef Categories
Era and Period
Epoch and Age
Date
Availability
A Complete Reconstruction of the Hyolithid Skeleton Available to Purchase
U-Pb (zircon) age constraints on the timing and duration of Wenlock (Silurian) paleocommunity collapse and recovery during the “Big Crisis” Available to Purchase
Testing the limits of Paleozoic chronostratigraphic correlation via high-resolution (<500 k.y.) integrated conodont, graptolite, and carbon isotope (δ 13 C carb ) biochemostratigraphy across the Llandovery–Wenlock (Silurian) boundary: Is a unified Phanerozoic time scale achievable? Available to Purchase
Vertebrate extinctions and reorganizations during the Late Silurian Lau Event Available to Purchase
Carbonate platform evolution and conodont stratigraphy during the middle Silurian Mulde Event, Gotland, Sweden Available to Purchase
Ludlow (late Silurian) oceanic episodes and events Available to Purchase
Paranomenclature and the rules of zoological nomenclature; with examples from fossil polychaete jaws (scolecodonts) Available to Purchase
The optimal acetate buffered acetic acid technique for extracting phosphatic fossils Free
A buffered formic acid technique for conodont extraction Free
An oceanic model for lithological and faunal changes tested on the Silurian record Available to Purchase
A possible mechanism in convergent evolution Free
Acetic acid and phosphatic fossils; a warning Free
Sudden appearances of Silurian conodont lineages: Provincialism or special biofacies? Available to Purchase
Many conodont lineages that appear in the Ludlovian on Gotland and elsewhere have no known earlier record anywhere. The closest relatives are found not in the earliest Ludlovian but in the latest Llandoverian-earliest Wenlockian or in still older beds. Ordinary biofacies and lithofacies models fail to explain the observed distribution, since such lineages appear in all of the different facies identified. Either these lineages evolved in an as yet unsampled province, the isolation of which broke down gradually during the Ludlovian, or their appearance reflects changes in the chemistry of the seawater. If the latter interpretation applies, then it indicates that conodonts can be used as sensitive indicators of fluctuations in the marine realm.