Articles tagged with: Sporormiella
Decline in Megafauna Pre-Dates Clovis, Extraterrestrial Impact
Twenty thousand years ago, North America had a more impressive array of big mammals than Africa does today; by 10,000 years ago, 34 genera of these mammals were gone, including the 10 species that weighed more than a ton.
A new study, published in Science, shows that the decline in Megafauna in North America pre-dates the Clovis culture, or the proposed extraterrestrial impact, by 1000 years. The evidence comes from fungal remains from dung:
Sporormiella is a fungus that produces spores in the dung of large herbivorous vertebrates. Lots of dung means lots of spores, so Sporormiella gives an index of the biomass of large herbivores.
Here’s the chart:
As usual, I’ll now be critical. The study is based on a mere 13 samples – in my opinion not nearly enough to cover 13 genera across a continent – and 4 of those were rejected as being anomalous. By anomalous they decided they …