Trilobites are complex, elaborately segmented forms with jointed appendages and swimmerets, antennae, compound eyes, and cephalized, or head-to-tail, nervous systems.

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.

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.

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.

Early in the history of paleontology, a university professor with an interest in fossils was tricked into collecting fabricated objects as fossils and published a book illustrating these false productions. As a result, Johann Beringer was ridiculed unmercifully. This is not a good example to follow. We all make mistakes, and we should show compassion when we find errors in the work of others. Published in Origins v. 19 n.2.

A collection of short commentaries on scientific papers published in 1991, covering topics such as Permian trees, molecular genetics, epigenetics, inheritance of paternal mtDNA, water and formation of petroleum, water in mantle rocks, impacts, Ordovician volcanism, molecular phylogenies of ratites, termites, cichlids and sabertooths, osteocalcin in dinosaur bones, fossil flowers, origin of life, Precambrian predation, stromatolites, Cambrian Explosion, quality of fossil record, rapid speciation, tree biogeography, Miocene ape, fossil dermopteran, Asian marsupial, dinosaurs, mammal-like reptile. Published in Origins v. 19, n. 2.

A review of the book, The Early Evolution of Metazoa and the Significance of Problematic Taxa. Published in Origins v. 19, n. 2.

A review of the book, Rates of Evolution. Published from a symposium on evolution. Published in Origins v. 16, n. 2.

Most punctuated equilibria theories explain why proposed exceptions tend to be in the Upper Cenozoic. Punq Eq Creation Style, however, not only predicts the stasis and abrupt appearance of species, but it also predicts that exceptions will be found in the Upper Cenozoic among forminifera. Because of its greater explanatory power, PECS teoyr is superior to other PE theories. Published in Origins v. 16, n. 1.

Foraminifers exemplify many of the problems of fitting the fossil record into a short chronology, including thousands of named species and apparent evolutionary sequences. Any short-time creationist model must be able to explain these features. Published in Origins v. 15, n. 1.

A review of the book, Evolution: A Theory in Crisis. Evolutionary theory faces many contrary lines of evidence and is in need of major changes. Published in Origins v. 13, n. 1.

Most amino acids exist in two forms, commonly called "left" and "right." Living organisms use only "left" amino acids, but after death, the "left" amino acids begin changing to "right" forms, until there is an equal number of both. This suggests the possibility of using the amount of change as a measure of time, leading to the development of amino-acid dating. This dating of method does not confirm the results of other methods of dating. Published in Origins v. 12, n. 1.

Bird and mammal footprints are most common in the same stratigraphic intervals where their body fossils are common. However, reptile and amphibian tracks are more common in stratigraphic layers lower than their body fossils. Published in Origins v. 9, n. 2.

A review of the book, Puncuated Equilibria: The Tempo and Mode of Evolution Reconsidered. The new theory of punctuated equilibria acknowledges the gaps in the fossil record used by creationists as evidence against evolution, and explains them as due to the nature of the speciation process. However, the new theory applies only to gaps between species, and does not help with the problem of gaps between higher taxa. Published in Origins v. 5, n. 1.

A review of the book, The Two-taled Dinosaur. Dinosaurs, and other fossils, can be interpreted in more than one way. Published in Origins v. 4, n. 2.

Growth lines found in several invertebrates show promise of serving as a basis for many avenues of investigation. Their value as an independent method for geochronometry is presently questioned, while other methods of using them are being developed. Published in Origins v. 1, n. 2.

Thousands of well-preserved Cambrian fossils are found in the Burgess Shale of Alberta, Canada. These Cambrian fossils are complex and diverse, in contradiction to the expectations of evolutionary theory. Published in Origins v. 1, n. 1.

This article is an update of the article, Famous Fossils on a Mountaintop (Origins v. 1, n. 1)