Key Takeaways on the First Mammal According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ...

THE work under notice 1 is designed, primarily for medical students, as a guide to a course of practical work in mammalian comparative anatomy and histology, to accompany a series of lectures on ...

While all types of ancient remains are valuable to science, teeth— protected by enamel, the hardest substance in the body—are more likely to survive the ravages of time, pressure, and erosion. In fact ...

Lisa Noelle Cooper, an associate professor of mammalian anatomy and neurobiology at the Northeast Ohio Medical University, agreed that the dolphin’s defect is likely rooted in its genes. “Given that ...

The findings, published in Nature Communications April 17, also help explain the evolution of mammalian anatomy. “That hyperactive state in sperm is key for successful fertilization, ...