<Table> <Tr> <Th_colspan="2"> Thumb </Th> </Tr> <Tr> <Td_colspan="2"> Bones of the thumb, visible at left </Td> </Tr> <Tr> <Th_colspan="2"> Details </Th> </Tr> <Tr> <Th> Artery </Th> <Td> Princeps pollicis artery </Td> </Tr> <Tr> <Th> Vein </Th> <Td> Dorsal venous network of hand </Td> </Tr> <Tr> <Th> Nerve </Th> <Td> Dorsal digital nerves of radial nerve, proper palmar digital nerves of median nerve </Td> </Tr> <Tr> <Th> Lymph </Th> <Td> Infraclavicular lymph nodes </Td> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Th> Latin </Th> <Td> pollex digitus I manus digitus primus manus </Td> </Tr> <Tr> <Th> MeSH </Th> <Td> D013933 </Td> </Tr> <Tr> <Th> TA </Th> <Td> A01. 1.00. 053 </Td> </Tr> <Tr> <Th> FMA </Th> <Td> 24938 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Thumb </Th> </Tr> <Tr> <Td_colspan="2"> Bones of the thumb, visible at left </Td> </Tr> <Tr> <Th_colspan="2"> Details </Th> </Tr>

The first animals to have opposable grasping digits were