Their excretory, urinary and reproductive systems all open into the cloaca, while its most notable species has five sex chromosomes and produces venom through the crural glands.
Their excretory, urinary and reproductive systems all open into the cloaca, while its most notable species has five sex chromosomes and produces venom through the crural glands. Members of it have lower body temperatures and metabolic rates than most of their class, which are adaptations to the harsher environments they have endured. Although they produce milk, they have no nipples and instead excrete it through openings in their skin. Adults have no teeth, and members have ankle spurs. FTP, name this order of egg-laying mammals whose modern members include platypuses and echidnas.
Their excretory, urinary and reproductive systems all open into the cloaca, while its most notable species has five sex chromosomes and produces venom through the crural glands.
{Monotremata} or {Monotremes} (prompt on equivalents)