Historical Biogeography of South America, Part II: Fossil Vertebrates
This section focuses on South American fossil vertebrates, excluding marine fish. Extinct families will be emphasized here, as living families were considered in Part 1.
This section focuses on South American fossil vertebrates, excluding marine fish. Extinct families will be emphasized here, as living families were considered in Part 1.
Catastrophism and uniformitarianism have played a major role in the interpretation of the history of earth. The first assumes rapid, unusual, major geological events, while the second asserts with the contrary concept of small, slow, and prolonged changes.
Attempts to account for the He-4 in Earth's atmosphere on the basis of diffusion of radiogenic helium from the crust and thermal loss to outer space yield unreasonable models. Published in Origins v. 25, n. 2.
A collection of short commentaries on scientific papers published in 1998, covering topics such as boat-building by Homo erectus, biogeography of baobab trees, dispersal by hurricane, design in the genetic code, molecular machines, the problem of homology, peppered moths, lateral gene transfer, Antarctic fish hemoglobins, mammoth phylogeny, origin of life, diversity of Ordovician fossils, patterns of diversity in fossils, bryozoan carbonates, fossil insects and plants, fossil record of vertebrate tracks, body size in North American mammals, Precambrian sponges, Cambrian traces of dinoflagellates, fossil flowers, fossil bird taphonomy, decay of shrimps, catastrophic burial of dinosaurs, fossil whales, and Adam, death and sin. Published in Origins v. 25, n. 2.
This article covers several features and areas that demonstrate the catastrophic processes that shaped the Northwestern US.
Polonium radiohalos are best explained by diffusion of by-products of radioactive decay of uranium and thorium, and not as evidence of supernatural activity. Published in Origins v. 24, n. 2.
FOREWORD byClyde L. WebsterPh.D. Senior Research Scientist Geoscience Research Institute Very few things capture one's imagination quicker than finding a fossil while on a nature walk or even a walk through a museum. There is an almost mystical drawing power associated with fossils. Questions of What? Where? When? Why? and How? immediately flood one's mind, and in some cases may remain there forever,…
Research in the Yellowstone "fossil forests" includes study of the sediments, purported paleosoils, and paleoecology. Together, these indicate the "forests" are not in situ, but have been transported. Comparison with the effects of the eruption of Mt St Helens and the floating log raft in Spirit Lake provide an example of a possible mechanism for emplacement of the fossil trees in Yellowstone. Published in Origins v. 24, n. 1.
One of the most interesting challenges in understanding Earth history is explanation of the order in the fossil record. Study of fossil patterns and trends should help improve our understanding of the underlying processes. Published in Origins v. 23, n. 2.
Examples of false fossils warn us to be cautious, especially when dealing with ill defined objects which, in spite of varied claims, may or may not be real fossils. Published in Origins v. 23, n. 2.
A collection of short commentaries on scientific papers published in 1996, covering topics such as Homo erectus, the Permian mass extinction, mutations in Chernobyl rodents, dropstones, yeast genome, Heart Mt detachment, carbonate cycles, eye development gene, RNA World, Archaeopteryx, Cambrian chordate, turtles, stromatolites, and pseudogenes. Published in Origins v. 23, n. 1.
Study of the Bridgewater "Fossil Forest" of Victoria, Australia shows calcification of plants of two distinct appearances. One group is more superficial and consists of branching structures that appear to have grown in place. At a lower level is a series of layers of larger, hollow stump-like structures for which a suitable explanation is not known. Published in Origins v. 23, n. 1.
A review of the nature and characteristics of the Genesis text leads to the conclusion that the biblical flood was global in extent. Published in Origins v. 21, n. 2.
A review of the book, Grand Canyon: Monument to Catastrophe. Published in Origins v. 21, n. 2.
A collection of short commentaries on scientific papers published in 1993-1994, covering such topics as parasite degeneration, convergence in diapsid reptiles, induced neoteny, genetic code, directed mutation in bacteria, radiohalos in a diamond, coelacanth phylogeny, marsupial phylogeny, origin of life, and fossil change in Jurassic rocks. Published in Origins v. 22, n. 1.
Coconino Sandstone research has demonstrated how catastrophists can use their theory to develop specific hypotheses about a geologic feature (the Coconino Sandstone), and successfully carry out scientific research to test that hypothesis. This is one criteria that science used to determine the scientific value of any theory.
A collection of short commentaries on scientific papers published in 1993-1994, covering topics such as C. elegans genes, hotspots, stromatolites, insecticide resistance, and the Cambrian Explosion. Published in Origins v. 21, n. 2.
The catastrophic burial of plant debris and its subsequent change to coal is not accepted by most coal geologists. However, the dominant "peat bog" theory presents problems that have remained unanswered for more than a hundred years. A Flood model for the formation of coal answers some of these problems and provides a scientifically reasonable explanation for the origin of the vast quantities of coal that exist worldwide.
A review of the book, New Concepts in Plate Tectonics. The theogy of plate tectonics is questioned on geological grounds. Published in Origins v. 21, n. 1.
The fact that animals need plants poses a problem for the evolutionary model, since the record of past life sometimes reveals non-viable ecosystems. Published in Origins v. 21, n. 1.