When Someone finds it.
There are many ways in which you can classify an unknown species. To classify an unknown species you can compare it to similar species.
No - there are over 40 known species and no species are known to have become extinct.
A species is a group of closely related organisms. Organisms belong to the same species if they can mate and produce fertile offspring. A lion and tiger are not the same species because they can make a liger, but it will not be fertile.
there are thousands of known endangered species on earth however that are thousands of more unknown endangered species
There are no known records or information on a dectorial squal. It is unknown what species that this is. Maybe the spelling is wrong.
The only known dinosaur to live in Oregon was an unknown species of Hadrosaur.
the pacific has more that 1,234,768 known species in the pacific ocean. There are more than 7,000 UNKNOWN SPECIES in just the pacific.
Nobody knows the exact number of known species of deep sea fishes. There are too many species that cannot all be listed. The most deep sea fishes are yet unknown.
There are many things that can cause an ecosystem to become endangered. When an ecosystem and the species in that ecosystem become endangered, it is known as a hotspot.
It they are unknown how would we know if they are unknown
Australia
Conifer