Humans Seals and bats all have an upper pair of appendages

Last updated: 5/16/2023

Humans Seals and bats all have an upper pair of appendages arms which contain a first bone projecting from a shoulder thoracic cage called the humenus a pair of bones called the radius and uina following a joint with the humerous to ulna meet extend metacarpals and then phlanges fingers The fact that this bone arrangement is similar among these three types of mammals suggests that these features are O Convergent Analogous O Homoplasies Homologous Reversals