Today another one came home with me

Just arrived home directly from the supermarket
Can you help me with its id?
Thanks

Hello Cris . I have seen in some databases that your specimen is similar to M. pettersonii and M. petrophila. If you compare the photography with your plant you could have their name

No, defititely not M. pettersonii.

Many thanks Joma:)

Many thanks Chris:)

this plant could be from m.ystax family for bristels in the axils....
m.huajuapensis maybe....

https://mammillaria.forumotion.net/t1136-mammillaria-huajuapensis

but what kind of supermarket for a plant so rare??