The story of vertebrate evolution over the last 250 million years is one of the most remarkable, and most complex to unravel, stories of all time. Throughout the ages, extraordinary species and groups have come and gone, and we are left now with only a fingerprint of times long forgotten. Recreating and detecting macroevolutionary patterns […]
What do we currently understand by a ‘species’? Naming species, also known as alpha taxonomy, forms the fundamental basis and core of systematic analysis (e.g., for biodiversity, macroevolutionary and ecological studies). Since the origin of the species concept, there has been heated and continuous debate as to what exactly constitutes a species. The discovery of […]
Diplodocus has always held a significant position in the hearts of dinosaur palaeontologists, as it was one of the very first genera to ever be formally recognised and described. Following, are some images and attempted reconstructions from Hutchinson (1917), and by comparison some excellent recent research by Taylor et al. (2009) on posture in Diplodocus […]
“If you want to inspire confidence, give plenty of statistics. It does not matter that they should be accurate, or even intelligible, as long as there is enough of them.” Lewis Carroll (1832-1898) The last post on this series gave an introduction to the background and significance of quantitative shape analysis. I conveyed the […]
Those of you who have read my recent articles will probably have noticed the phrase ‘geometric morphometrics’ a few times. When mentioned to people, the usual reaction is to melt or run away screaming satanic verse and tearing chunks of hair out (pers. obs). This is largely due to the pretty intense mathematical basis behind […]