Sunday Sketch: Armadillo Quadruplets

Did you know?

The nine-banded armadillo nearly always gives birth to identical quadruplets! If she has a hard time telling them apart, don’t blame her: she has her hands full!

Scan

Fact and sketch contributed by Amelia Munson


Sources:

Stockard, C. R. (1921). A probable explanation of polyembryony in the armadillo. The American Naturalist, 55(636), 62-68.

Hamlett, G. W. D. (1933). Polyembryony in the armadillo: genetic or physiological?. The Quarterly Review of Biology, 8(3), 348-358.

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