Did Mammals Give Birth To Live Young 236 Million Years Ago? Fossil Discovery Explained
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10 Articles
A 236 million year old cynodon retains a bone mark that suggests that animals of this lineage could give birth long before thought.
Ancient Fossil Changes the History of Live Birth
A long-extinct, dog-size predator may have been giving birth in a way that changes an important part of the narrative of mammals, reports Live Science . A new analysis of a 236-million-year-old fossil from Argentina suggests Chiniquodon theotonicus, an early mammal relative known as a cynodont, delivered live young—pushing the...
The study of a microscopic signal in the bones of a cynodon suggests that this animal may have given birth to live offspring and not laid eggs, based on the analysis of a fossil found in northwestern Argentina.
Ancient mammal ancestors gave birth to live young, 236-million-year-old fossil finds
A 236-million-year-old cynodont fossil from Argentina contains evidence that the animal may have given birth to live young rather than laying eggs. Bone growth patterns and estimated newborn size made the animal look far more like a placental mammal than a reptile or bird. The finding could push live birth deep into mammal ancestry, although researchers say more fossils are needed to determine when and how often it evolved. A fossil bone from no…
Noticias Argentinas | Agencia de noticias
Buenos Aires, 14 August (NA) -- A fossil of a cynodon (Chiniquodon theotonicus) found in the province of La Rioja, retains in its bones a sign of growth that could be related to the birth, something that could change the history of mammals. The microscopic analysis of this piece points to the fact that this specimen of some 236 million years ago could be alive. The discovery, which was recently published in Frontiers in Mammal Science, advances …
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