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Las Bexareñas and Their Wills
Amy M. Porter
Nov 04, 2022
The women of San Fernando de Béxar (modern-day San Antonio, Texas) on the northern edge of New Spain faced the many challenges of frontier life. The belongings of these women were limited compared to that of women in other parts...
Fossilization causes organisms to appear erroneously primitive by distorting evolutionary trees
Fossils are vital for calibrating rates of molecular and morphological change through geological time, and are the only direct source of data documenting macroevolutionary transitions. Many evolutionary studies therefore require...
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Phylogenetic position of <em>Diania</em> challenged
Liu et al.1 describe a new and remarkable fossil, Diania cactiformis. This animal apparently combined the soft trunk of lobopodians (a group including the extant velvet worms in addition to many Palaeozoic genera) with the...
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Fossilization causes organisms to appear erroneously primitive by distorting evolutionary trees
Fossils are vital for calibrating rates of molecular and morphological change through geological time, and are the only direct source of data documenting macroevolutionary transitions. Many evolutionary studies therefore require...
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Geographic range did not confer resilience to extinction in terrestrial vertebrates at the end-Triassic crisis
Alex Dunhill, Matthew Wills
Aug 11, 2015
Rates of extinction vary greatly through geological time, with losses particularly concentrated in mass extinctions. Species duration at other times varies greatly, but the reasons for this are unclear. Geographical range...
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