Quetzalcoatlus northropi was one of the largest pterosaurs, with a wingspan reaching up to 10 meters. It lived during the Late Cretaceous period and likely inhabited inland environments. This species is known for its elongated neck, beaked jaw, and capability for both flight and terrestrial locomotion.

Quetzalcoatlus northropi is known to have inhabited North America during the Late Cretaceous period, approximately 68 to 66 million years ago. Fossil evidence primarily originates from the Javelina Formation in what is now Texas, USA.

Quetzalcoatlus northropi lived in a warm, semi-arid environment characterized by river systems and open landscapes. The climate during the Late Cretaceous was warmer than today, which supported a diverse range of flora and fauna.

As one of the largest known flying animals, Quetzalcoatlus northropi is believed to have played a role as a scavenger or predator, possibly feeding on small to medium-sized vertebrates. Its ecological niche likely involved exploiting both terrestrial and aerial food sources, utilizing its immense wingspan for efficient gliding and soaring over vast areas.