Are these real crocs styles?

Hey.. here where I am, they sell these crocs styles called lexi and nahani. the lexi styles are like mary jane wedges but the on on the side is the big flower jibbit. it comes in black, brown and cotton candy pink. then the nahani styled shoes are like skimmers with shoe lace. they come in g and cotton candy pink. i checked the signs to show it's crocs authenticity. it has "made in china" on the bottom and it says boulder colorado on the bottom too. BUT! the pattern on the soles are different. they arent like the bottom of the caymans, or mary janes, or malindis, or alice!! they're different. does that mean that the crocs store here sells fake crocs?? they sell real ones, too. and the store is called crocs and it looks like any other crocs store. can you explain to me. and give me addresses of the sites where you got the info. please and thank you