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Scientists from all over the world are of the view that birds somehow evolved from dinosaurs. Believed to be the first avialan bird to have existed in China, Jinfengopteryx elegans is one of the dinosaur species that marks the evolution of birds. In Chinese folklore, it is considered to be the queen of birds, and hence, the dinosaur is referred to as 'Jinfeng' or the 'golden phoenix'. However, this bird-like dinosaur that inhabited the earth about 122 million years ago was first rendered identification as a basal bird, often being contrasted with Archaeopteryx. It was Luis Chiappe who first indicated that the species drew resemblance with the troodontids as the second toe projected a longish claw curved like a sickle. Norell and Xu followed suit, and in 2006 they underscored that the body plan, as well as the dental structure, was also identical to that of troodontids. In 2007, it was classified as the first specimen of a troodontid to exhibit feather impressions like birds.
Read along to know more about this non-avian dinosaur species. Also, don't forget to check out these mind-boggling facts about other dinosaurs like the judiceratops and probactrosaurus.
The pronunciation of the non-avian bird goes like 'Jin-feng-op-the-riks'. The term is a combination of the terms 'Jinfeng' and 'feather'. 'Jinfeng' stands for 'golden phoenix' in Chinese. Also, in the Greek language, the word 'πτερυξ' or 'pteryx' translates to 'feather'.
Jinfengopteryx was a troodontid that was initially mistaken for birds because of the presence of feathers on the body. It was a small theropod dinosaur that had the appearance and size of a bird. The charismatic appeal of the species is associated with the Chinese term 'Jinfeng' that implies 'golden phoenix'. As per Chinese folklore, it was the queen of birds.
The species dwelled on this earth in the Early Aptian stage of the Lower Cretaceous epoch more than 120 million years back.
Jinfengopteryx elegans inhabited the Chinese territory about 122 million years ago, but the time frame within which the existence of the species was completely erased off still remains to be unraveled.
Skeletal remains of the troodontid extracted from the Huajiying Formation in the northern Hebei Province imply that these dinosaurs inhabited modern-day China.
One of the most interesting facts about the species is that it was accustomed to a terrestrial habitat in spite of having feathers. The preserved feather impressions actually threw the scientists off the scent, and as a result, it was previously considered to be the first avialan bird of China, but later discoveries suggested that it wasn't a bird at all but a ground-dwelling dinosaur.
Jinfengopteryx existed millions of years ago, so its social behavior couldn't be analyzed. There's no concrete evidence to prove whether the dinosaur preferred to remain aloof or dwelled in groups or pairs.
It is pretty difficult to figure out the average lifespan of these troodontids since extensive research is lacking in this field.
Jinfengopteryx, like other dinosaurs, engaged in oviparous reproduction where females laid eggs post-copulation. Specific details related to reproduction such as the clutch size, breeding behavior, and courtship rituals could not be deciphered till now. However, it can be inferred that the young were capable enough to survive on their own right after hatching since they were not showered with parental care post-birth.
As revealed by the fossilized troodontid specimen, the dinosaur possessed a small-sized body with a robust snout, small forelimbs, and a triangular skull. Originally, the species was considered a basal bird of the Archaeopterygidae family, but it was identified to be a troodontid based on the enlarged claws that projected out of the second toe. The presence of pennaceous feathers could be traced in the fossil remains. However, the hind legs lack flight feathers that make them incapacitated for aerial ventures. Both tail and tail feathers were long like that of Archaeopteryx. According to an analysis made in 2020, the species also projected similarities with other non-avian theropod dinosaurs such as Rahonavis and Microraptor.
The total number of bones that constructed the entire body structure cannot be mentioned with accuracy. However, the well-preserved skeletal remains of this theropod dinosaur known from a single specimen were almost complete. Although feather impressions were found on the slabs, they were not compatible for flight.
The primary mode of communication among these troodontids was through vocalizations. It is not known for sure whether they engaged in bodily displays or gestures for interacting with each other.
The average length of Jinfengopteryx elegans was about 1.8 ft (55 cm). This implies that the troodontid species was rather small for a dinosaur. It was slightly larger than Archaeopteryx that measured approximately 1.6 ft (48.8 cm) in length.
Despite the presence of feathers, the small-sized dinosaur was a ground-dwelling one, and it lacked the adaptations required for flight. However, these dinosaurs, much like Tyrannosaurus rex, indulged in bipedal movements utilizing their hind legs. It can be assumed that these dinosaurs were thrifty in their movements. Nevertheless, the accurate speed range of these troodontids is shrouded in the cloud of mystery.
Jinfengopteryx elegans was initially thought to be a bird because of the feather impressions preserved on the fossils. The weight of the species was akin to that of a modern-day chicken. Therefore, the approximate weight is somewhere around 1 lb (0.4 kg).
The males and females have not been designated with sex-specific names, so they are simply regarded as male and female dinosaurs, respectively.
Although the baby of Jinfengopteryx doesn't have any singular attributions, it can be called a young or hatchling since, like a bird, the babies hatch from eggs.
The species is considered to be an omnivore, but like all theropods, it also possessed carnivorous inclinations. However, the dietary habits of the dinosaur are debatable because some researchers are of the view that it could have been entirely herbivorous. Impression of oval structures identified as seeds indicates that the species was most probably omnivorous.
The behaviorism of the species towards its own lot as well as others is undetermined.
The fossilized imprints of this first avialan bird of China displayed feather impressions on several parts of the body, including hips, tail, upper hindlimbs, and others. The feathers on the upper legs, hips, and neck were rather short and simple.
The dental structure of the dinosaur helped in its identification as a troodontid. The tooth crowns were conical, while the teeth were closely packed but not serrated. The maxillary teeth were comparatively curved than those of the premaxillary.
The world came to know of the existence of the golden phoenix, aka Jinfengopteryx elegans of the Lower Cretaceous period after its fossilized remains were excavated from the Huajiying Formation site of Hebei Province in China. However, only one specimen, that is, CAGS-IG-04-0801 with an almost complete skeletal framework, could be retrieved from the site.
Here at Kidadl, we have carefully created lots of interesting family-friendly dinosaur facts for everyone to discover! For more relatable content, check out these panoplosaurus facts or albalophosaurus facts for kids.
You can even occupy yourself at home by coloring in one of our free printable Long Neck coloring pages.
Main image by Kumiko
Second image by Matt Martyniuk
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