昔から、恐竜のオスとメスを化石で見分けることはとても難しいことでした。
From ancient times, it has been extremely difficult to distinguish between male and female dinosaurs through fossils.
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However, recent studies have revealed that it is possible to determine the sex of hadrosaur dinosaurs.
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Hadrosaurus was a herbivorous dinosaur, also known as the duck-billed dinosaur, and lived all over the world during the Late Cretaceous period.
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In many hadrosaur fossils, similar scars have been found on the bones at the base of the tail.
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These wounds have already healed, so scientists believe that they were made while the dinosaur was still alive.
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Researchers believe that these wounds may have been caused when males climbed onto the backs of females during mating.
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After examining Hadrosaurus fossils from various locations, numerous similar scars were discovered.
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They considered other causes such as fighting or accidents, but injuries from mating are the most reasonable explanation.
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This discovery may provide clues for identifying female hadrosaurs.
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However, the research has only just begun, and it is necessary to examine more fossils.
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Identifying the gender of dinosaurs from bones alone is extremely difficult, but this study has brought new progress.
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