<Table> <Tr> <Th_colspan="2"> Grizzly bears </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Grizzly bear in the United States of America </Td> </Tr> <Tr> <Th_colspan="2"> Conservation status </Th> </Tr> <Tr> <Td_colspan="2"> Least Concern (IUCN 3.1) </Td> </Tr> <Tr> <Th_colspan="2"> Scientific classification </Th> </Tr> <Tr> <Td> Kingdom: </Td> <Td> Animalia </Td> </Tr> <Tr> <Td> Phylum: </Td> <Td> Chordata </Td> </Tr> <Tr> <Td> Class: </Td> <Td> Mammalia </Td> </Tr> <Tr> <Td> Order: </Td> <Td> Carnivora </Td> </Tr> <Tr> <Td> Family: </Td> <Td> Ursidae </Td> </Tr> <Tr> <Td> Genus: </Td> <Td> Ursus </Td> </Tr> <Tr> <Td> Species: </Td> <Td> U. arctos ssp . </Td> </Tr> <Tr> <Th_colspan="2"> Binomial name </Th> </Tr> <Tr> <Td_colspan="2"> Ursus arctos (Linnaeus, 1758) </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> U. a . californicus † </Li> <Li> U. a . gyas </Li> <Li> U. a . horribilis </Li> <Li> U. a . middendorffi </Li> <Li> U. a . nelsoni † </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Historic and present range </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Grizzly bears </Th> </Tr>

What is the genus of a grizzly bear ursus arctos