Tapejaridae

Long ago, flying animals called tapejarids lived on Earth.

They lived in many lands like Asia and Africa. These animals had very big heads. Many had a bony crest on their nose. Some even had a soft crest on their head.

They had great eyes to help them see. They used their eyes to hunt for food. These animals also had curved claws. This helped them climb up trees. They may have eaten plants or fruit.

They were very interesting flyers.

Tapejarids were a family of flying reptiles. They lived during the Cretaceous period.

These animals lived in many places. We find their fossils in Africa, Asia, and Europe. They also lived in South America. Scientists think they first came from Asia.

Most tapejarids had very large heads. Many had a bony crest on their snout. This crest is a hard part on the nose. Some species had a soft crest too. This crest was made of fibrous tissue. They also had large holes in their skulls. These holes were in front of their eyes.

Their eyes were small and shaped like pears. However, their vision was very good. They likely used their sight to hunt.

Their wings grew near their bellies. This is like how some planes are built. They had curved claws for climbing. Many experts think they lived in trees. They may have eaten fruit or plants. One fossil even shows plant parts in its belly.

Tapejaridae is a family of flying reptiles called pterosaurs. They lived during the Cretaceous period. These animals lived all over the world. We find their fossils in Africa, Asia, and Europe. They also lived in South America. Some fossils might even be from North America.

Scientists believe they first came from Asia. This is because the most primitive members were found there. Their name comes from a Tupi word. It means "the lord of the ways."

These creatures had very special heads. Most had a bony crest on their snout. This crest grew from the bones of the upper jaw. In some species, this bone supported a larger crest of soft, fibrous tissue.

They also had a large opening in the skull called a nasoantorbital fenestra. This hole sat in front of the eyes. It was at least half the length of the whole skull. Their eye sockets were small and shaped like pears.

Their bodies worked in unique ways. Studies show they had extremely good vision. They likely used their sight to hunt or talk to others. Their wings grew near their bellies instead of their backs. This is a "bottom decker" setup, like some modern planes.

They also had curved claws. This suggests they were arboreal, which means they lived in trees. Many experts think they ate fruit or plants. One fossil of a Sinopterus even had plant parts in its belly.

Many scientists have worked to name these animals. Alexander Kellner named the family in 1989. He was a paleontologist from Brazil. In 2007, he split the family into two groups. These were Tapejarinae and Thalassodrominae.

Other scientists like David Unwin and Mark Witton had different ideas. They thought some members belonged in different families. Since then, many researchers have studied how these creatures are related.

Learning about tapejarids is like solving a giant puzzle. Different scientists find new clues in fossils. For example, Brian Andres and his team redefined the group in 2014. In 2023, Rodrigo Pêgas and his team studied them again. They looked at how species like Caupedactylus fit in.

Every new discovery helps us understand how these flying reptiles lived. They show us how much life changed during the Cretaceous period.

Tapejaridae is a family of azhdarchoid pterosaurs that lived during the Cretaceous period. Their name comes from a Tupi word meaning "the lord of the ways." These flying reptiles were spread across much of the globe. Scientists have found their fossils in Africa, Asia, and Europe. They are also well-known from South America. Some evidence suggests they may have lived in North America as well.

Most tapejarids were small to medium-sized animals. They possessed several unique physical traits, especially regarding their skulls. Most species had a bony crest rising from the snout. This crest was formed mostly by the premaxillary bones at the tip of the upper jaw. In some species, this bone supported a much larger crest. This larger structure was made of soft, fibrous tissue that extended back along the skull.

The skull of a tapejarid also featured a large nasoantorbital fenestra. This is a main opening in the skull located in front of the eyes. In this family, the opening spanned at least half the length of the entire skull. Their eye sockets were small and pear-shaped. Studies of their brain cases show they had extremely good vision. This vision was better than in other pterosaur groups. They likely relied almost exclusively on sight to hunt or interact with others.

Their body structure was also very unusual. Tapejarids had reduced shoulder girdles that hung low on the torso. This resulted in a "bottom decker" wing arrangement. This means their wings protruded from near the belly rather than the back. This setup is reminiscent of how some modern planes are designed.

Scientists believe tapejarids were arboreal, meaning they lived in trees. They had more curved claws than other azhdarchoid pterosaurs. They are often found in fossil sites alongside other arboreal flying vertebrates, such as early birds. Many experts speculate they were frugivores or omnivores. This idea comes from their parrot-like beaks. Direct evidence for plant-eating exists in a Sinopterus specimen. That fossil contains phytoliths and gastroliths in its abdominal cavity.

The classification of this family has changed many times. Brazilian paleontologist Alexander Kellner named the family in 1989. He defined it as the clade containing Tapejara and Tupuxuara. In 2007, Kellner divided the family into Tapejarinae and Thalassodrominae. However, other scientists challenged this model. In 2003, David Unwin suggested that Tupuxuara and Thalassodromeus were more distantly related to Tapejara. He believed they belonged to the Azhdarchidae family instead.

Other researchers have proposed different groupings over the years. In 2011, a study suggested the family Chaoyangopteridae should be part of Tapejaridae. This was not followed by all authors. In 2014, Brian Andres and his colleagues defined the family as the clade containing Tapejara and Sinopterus. They also created the group Tapejarini. More recently, in 2020, a new subfamily called Sinopterinae was named. This group includes species more closely related to Sinopterus than to Tapejara.

In 2023, Rodrigo Pêgas and his team studied these relationships again. They argued that Thalassodromidae and Tapejaridae should be separate families. They found that these groups belong within a larger group called Tapejaromorpha. In 2024, Pêgas provided further updates to these names. His work helps clarify how species like Caupedactylus and Aymberedactylus fit into the tree of life. These constant changes show how much we are still learning about these ancient creatures.