Difference between metatheria and Eutheria

By: Prof. Dr. Fazal Rehman | Last updated: February 3, 2024

Let me share with you a difference between metatheria and Eutheria.

Aspect Metatheria Eutheria
Known as Marsupials Placental mammals
Reproduction Live birth and offspring continue development in a pouch. Live birth and offspring fully develop inside the uterus and get nutrition through placenta.
Gestation period Short gestation period usually of few weeks Longer gestation period
Placenta Simple, short-lived placenta or absent Well-developed, complex placenta
Geographic distribution Predominantly in Australia and the Americas Widespread globally
Number of Species Diverse group with a significant number of species Largest group of mammals with the highest number of species
Lifespan Shorter lifespan Longer lifespan
Examples

 

 

·        Kangaroos

·        Koalas

·        Opossums

 

·        Humans

·        Dogs

·        Cats

·        Elephants

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