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Do you collect trilobite? Or you are one of the researchers study trilobites? They are more than 10000 species of trilobites exist on the earth before, one of the most diverse groups of extinct marine arthropod. Even a single species, they exhibit a series of different variance. And this small variance, revealed a big secret of prehistoric animal, the Sexual Dimorphism! This is about a topic going to discuss over this book, it provides a fossil evidence to show the earlier appearance difference between male and female start not later than Cambrian period, about 521 million years ago!
The founder of Petrified Embryology. Officially as Surfactant Chemist. Inspired by small Flexicalymene Trilobite and Ammonite fossil selling from Shi Shang during travel to the National Taiwan Museum in Mar 2019 and start the collection of fossil from Trilobite slowly to Dinosaur and later founded the concept of Petrified Embryology at end of the year of 2019.