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Soot may have killed off the dinosaurs and ammonites

Geology Page - July 15, 2016

A new hypothesis on the extinction of dinosaurs and ammonites at the end of the Cretaceous Period has been proposed by a research team...

A day in the life of an ammonite

Geology Page - January 14, 2016

Several years ago, back when I was working as the lab and collections manager for the St. George Dinosaur Discovery Site in St. George,...

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The oldest fossilized giant penguin

February 23, 2017

New source of methane for gas hydrates in Arctic discovered

March 31, 2015

Selenga River

February 19, 2014

Atom-by-atom growth chart for shells helps decode past climate

October 25, 2016

MORE ARTICLES

Example coprolites from Rancho La Brea (A) prior to asphalt removal with surrounding sediments, (B) showing intact pellets with plant material, (C) isolated, cleaned pellets. Figure 2, from: Mychajliw et al. 2020. Exceptionally preserved asphaltic coprolites expand the spatiotemporal range of a North American paleoecological proxy. Credit: Carrie Howard

Unprecedented preservation of fossil feces from the La Brea Tar Pits

The Sosnogorsk lagoon just before a deadly storm. Credit: Mikhail Shekhanov for the Ukhta Local Museum

The earliest well-preserved tetrapod may never have left the water

Gigantic dinosaurs like the sauropod Diplodocus, which weighed over 15 tons and was longer than an 18-wheeler truck, would have had problems with potentially lethal overheating. Hot blood from the body core would have been pumped to the head, damaging the delicate brain. New research shows that in sauropods, evaporation of moisture in the nose and mouth would have cooled extensive networks of venous blood destined for the brain. Other large dinosaurs evolved different brain-cooling mechanisms, but all involving evaporative cooling of blood in different regions of the head. Credit: Life restoration by Michael Skrepnick. Courtesy of WitmerLab at Ohio University.

Huge dinosaurs evolved different cooling systems to combat heat stroke

Bacteria in ancient flea may be ancestor of the Black Death