550-million-year-old fossil discovery fills 160-million-year gap in sponge evolution
Tomás Herrera
fossils
6 articles
250-million-year-old fossil egg proves mammal ancestors laid eggs
Tomás Herrera
289-million-year-old fossil reveals origins of air-breathing
Tomás Herrera
Famous 300-million-year-old octopus fossil debunked by high-tech scan
Tomás Herrera
500-million-year-old Utah fossil pushes back origin of spiders
Tomás Herrera
Antarctic Fossils Reveal Crinoids Survived Dinosaur Extinction
Tomás Herrera