Polar bears, arctic wolves, snowy owl and a lot more
it often supply energy and other nutrients and fiber that the body needs.
The bonds are phophodiester bonds between phosphate group of each deoxyriboneucleotide.
Possession of flagellum is not a taxonomic feature. many different unrelated organisms have flagellum. euglena, zooflagellates but also some fungi or even human sperm cells.
well when they were around that was decades and centuries ago so the bones have probably deteriorated from being pushed so far down in the earth