Artist&rsquo data terminal unit ;s reconstruction of a 1.5-meter-long male oviraptor Ingenia yanshini flirting with a potential mate. Credit: Syndey Mohr

A new study indicates that a group of bipedal dinosaurs, known as oviraptors, shook their feather-adorned tails to gain attention during their courtship rituals.

The scientists publ m2m communication ished their findings in the journal Acta Palaeontologica Polonica¹. The key evidence is the structure of their relatively stubby tail, which was muscular and flexible at its base, but rigid at its tip, were the half-dozen vertebrae that are either fused together into a blade-like structure or tightly arranged so that they’re inflexible.

There’s no indication that the dinosaur’s muscular tails were adorned with structures that would enable them to use these as weapons. However, there is some fossil evidence of early mem industrial IoT Gateway bers of the group, which lived 150 million years ago, during the Jurassic Period, that included large feathers which were either attached to the last few tail vertebrae or preserved in their vicinity. This suggests the presence of a fan-shaped display at the end of the appendage. new study of later species in the same lineage reveals that these dinosaurs had the same arrangement of tail vertebrae, and used the muscles to control he movements.

None of the more recent fossils of oviraptors included feathers, but these tissues could be missing because they weren’t preserved in the fossil record or because they weren’t present to begin with. The most likely use for a feather-tipped tail is for courtship display.

References

Persons, W. S., et al., Acta Palaeontologica Polonica, (2013) doi: 10.4202/app.2012.0093 

[via ScienceNOW]

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