Even though the dinosaurs have been extinct for millions of years, modern researchers argue that there is still proof showing how the impact of the dinosaurs can be seen among living organisms. As much as it may come as a surprise to many, several animals around us today share evolutionary connections with the dinosaurs. Research has shown that birds are considered the living cousins of theropod dinosaurs like the Tyrannosaurus and Velociraptor. Discoveries in fossils, anatomy, and genetics keep proving this finding. From the small pigeon resting atop someone's roof to the domestic chickens in the yard, several birds and animals today bear certain characteristics of their theropod ancestors.
The Chicken Still Resembles a Theropod Dinosaur
Even though many would describe the chicken as an ordinary poultry animal raised mostly on farms, it is recognized as a very close relative of ancient theropods. Chickens and dinosaurs had similar skeletons, reproductive behaviors, and genes. Some scientists jokingly call chickens "the little dinosaurs of the modern world." Claws, aggressive pecking, and bird physiology continue to impress evolutionary biologists studying connections between birds and their extinct predecessors.
The Pigeon Still Has an Evolutionary Past
Pigeons are one of the common birds one can easily find in every city around the globe. However, few people know that these birds come from a lineage directly linked to dinosaurs. Just like in the case of birds in general, the evolutionary relation to prehistoric ancestors of pigeons is evidenced by feathers, light bones, and beak structure. Though pigeons look very ordinary nowadays, they are some of the most remarkable surviving dinosaur-descendant species in the world.
Lizards Still Maintain Many of Their Reptile Ancestors' Features
While lizards are not direct evolutionary descendants of dinosaurs like birds are, they remain one of the oldest lineages of reptiles on earth, according to researchers. Many different types of lizards maintain various features that were common among prehistoric reptiles, such as having scales, being cold-blooded animals, maintaining sharp claws, and being egg-laying creatures. As explained by researchers, lizards play an important role for science because they enable scientists to better understand the prehistoric adaptations and survivability of reptiles for millions of years.
The Duck Belongs to the Dinosaur Family Tree
Like other species in this list, the duck is also the descendant of a prehistoric theropod. Scientists believe that ducks and all other birds are representatives of what was known as avian dinosaurs. Evidence of such a relation includes egg-forming ability, feather formation, bone structure, and nest-building. Despite being ordinary-looking, this bird is a descendant of some of the oldest species on the planet.
The Ostrich Is One of the Dinosaurs That Never Went Extinct
Scientists often refer to the ostrich when talking about bird dinosaurs because of its physical characteristics resembling prehistoric theropod structures. This bird is distinguished not only by its impressive height but also by a strong, muscular body, which makes it a perfect candidate for being referred to as a dinosaur ancestor's descendant. The ostrich is a good example of how some species managed to adapt to changing conditions of survival.
The Eagle Preserves Ancient Hunting Abilities
Predatory birds such as eagles continue displaying hunting skills resembling the behavior of prehistoric theropods. Their hunting methods involve sharp claws, acute vision, a hook-shaped beak, and aerial hunting strategies. With the help of such birds, scientists learn more about how their prehistoric counterparts could live and survive. Many adaptations of those times proved to be useful and were thus passed along to future generations.
Modern-Day Birds Are Technically Regarded as Living Dinosaurs
Nowadays, there is widespread understanding among scientists that birds should be considered dinosaurs because of the numerous connections. Recently found fossil evidence supports this claim, especially because of recent discoveries made in China. Unlike other dinosaurs, birds survived the extinction event that led to the deaths of other species about 66 million years ago. Therefore, every pigeon, hawk, crow, or chicken is now a representative of Earth's ancient dinosaur fauna.
