Esta cresta estaba compuesta principalmente de huesos fusionados de la cabeza y probablemente estaba recubierta de tejidos blandos en vida

Length 62mm

these were not as developed as those of felines of the same era

Titanis walleri vivió durante el Pleistoceno en América del Norte y América del Sur y perteneció a un grupo de aves conocido como los "fororrácidos

Thylacoleo carnifex Scale:1:10 Esta cresta estaba compuesta principalmenteThylacoleo carnifex, commonly known as the marsupial lion, is an extinct species of carnivorous marsupial that lived in Australia during the Pleistocene, approximately 2 million to 46,000 years ago. This formidable predator was characterized by having a robust body and a powerful head with extremely strong jaws. In terms of size, Thylacoleo carnifex was comparable to a modern big cat, measuring approximately 150 centimeters in length and reaching a