Assertion: possum's pouch | /r/AtLocation | blastula
Facets:
value: in arrested development in the uterus
type: LOCATION
Source sentences:
text: In addition, red kangaroo mothers may "have up to three generations of offspring simultaneously; a young-at-foot suckling from an elongated teat, a young in the pouch attached to a second teat and a blastula in arrested development in the uterus".