The "Cambrian explosion" is a term used to describe the abrupt appearance in the fossil record of major animal phyla, without intermediate forms in lower layers. This pattern of abrupt appearance can be observed for many groups of organisms, including crinoids (sea lilies).
A fossil bird recovered from Cretaceous lake deposits in China shows preservation of some soft tissues, including a pair of lungs that appear to have functioned in a way similar to those of living birds.
EDITORIAL. Those who study historical topics such as origins often face questions for which no easy answers are evident. Nevertheless, there are some things that can be known, and these should not be overlooked. Published in Origins, n. 65.
“You are dust, and to dust you shall return.” This verse from Genesis 3 captures very well the fate of beautifully designed organisms after the entrance of sin into the world. But how long does it take for the organic molecules we are made of to break down after death? In general, the longer the time from death, the larger the amount of decay that should be observed. This is particularly true for soft…
The stability of organic (carbon-based) molecules is an interesting and challenging topic as there are many different types of functional groups, molecular configurations, and molecular collisions to consider. Research on the stability of ascorbic acid (Vitamin C) and other vitamins demonstrates which factors to consider when it comes to the preservation of carbon-based molecules. Ascorbic acid…
Volcanic outcrops in the Galápagos Archipelago do not appear to provide the wealth of specimens found in other fossil-rich localities around the world. However, fossils are indeed present in the Galápagos Islands. This brief review addresses the where, what, when, and why of fossils in the Galápagos Islands and closes with a discussion of their potential contribution to the development of models on…
A general note of caution is necessary in the discussion of patterns in the fossil record. As with many other aspects of the natural world, the complexity that we find in this field of study tends to transcend our idealized categorizations.
Fossils are remains of organisms or traces of their activity preserved in the rock record. The scientific significance of fossils is truly remarkable, because they represent the only available archive of past forms of life. Through fossils, not only can we reconstruct the morphology of extinct creatures but also infer aspects of their ecology and environment. Fossils are also very relevant in discussions…
A collection of short commentaries on scientific papers published in 2015, covering topics such as phylogeny of moths, beak variations in species of Galapagos finches and scrub jays, functional synthetic chromosomes, horizontal gene transfer, Jurassic fossil snakes, stasis, trace fossils of swimming tetrapods, and habitat diversity in the fossil record. Published in Origins, n. 64.
Texbooks describe the fossil record as the ‘best evidence’ for evolution. They claim that the fossil record proves evolution because there seems to be a succession from simpler to more complex life forms, and a succession from marine to terrestrial forms. Charles Darwin suggested that all life has a common ancestor. “All the organic beings which have ever lived on this earth may be descended from some…
Lazarus species raise questions about how the geologic column formed. They are one good reason that we should be thinking about mechanisms other than deep time to account for the order we observe in the fossil record.
If one accepts the evidence of the Cambrian Explosion at face value, the Darwinian theory of evolution is falsified. Unsurprisingly, evolutionists have tried to explain the Cambrian Explosion as an artifact, due to the incompleteness of the fossil record. However, there is an explanation for the Cambrian Explosion that is consistent with the data. An intelligent being could generate the genetic information needed for a diversity of body types in a short time.
There is significant scientific data consistent with the biblical record of history, EZT represents one scientific theory that seems to explain historical data from the Bible and data from paleontology thought to challenge the Biblical record.
A collection of short commentaries on scientific papers published in 2003, covering topics such as frog biogeography, moas, the hoatzin, magic bullets in creationism, intelligent design, gene duplication, snail variation, Cambrian lagerstatten, extraterrestrial impacts, hotspots, carbonates, mitochondrial Eve, pseudogene function, mutations in bacteria, fossil diversity patterns, feathered dinosaurs, the fossil Microraptor, intermediate fossil Ichthyostega, problems with the evolutionary tree, and mitochondrial DNA differences. Published in Origins n. 58.
Most animal phyla, including those with soft bodies, appear in Cambrian sediments, in a pattern called the Cambrian Explosion. This pattern is exactly opposite of that predicted by Darwin's theory, but is readily explained in the context of creation and a global catastrophe. Published in Origins n. 53.
A collection of short commentaries on scientific papers published in 1999 (mostly), covering topics such as fox domestication, biogeography, a polyploid mammals, gene duplication, inbred cattle, pseudogenes, Missoula Flood, protein evolution, origin of life, dinosaur skin, quality of the fossil record, fossil burrows, Cambrian explosion, Neanderthal DNA, problems in phylogenetics, Australopithecus face, Galapagos tortoise phylogeny, the hoatzin bird, lateral gene transfer, limits to change, shark phylogeny, rift lake cichlids, and homeobox genes. Published in Origins n. 52.
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.
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.