Unmarked earthenware...

Hello all,  First of all, please be nice if these aren't actually 20th-Century pieces or don't completely fit this forum's scope of expertise.  I'm a true neophyte and really have no idea where to turn.  Two photos below represent pieces I acquired at an estate sale quite awhile ago.  I thought they were unique and cool so I bought 'em.  I took them home in a box, put the box away, and forgot about them until a few days ago when I 'rediscovered'.  

Any ideas from you all on where to start for dating, identification of geographical genesis, or even maybe material just to get me started on my way?  I have more photos and will gladly add them.  Thank you in advance!

it looks like it was made in Central America to me but that's waaaay out of my comfort zone

Thank you for your responses, Dan and Naomi.

I have, through two sources, eliminated the possibility of either being Native American. However, those two sources also suggested Central or South America as being geographic probabilities.

Getting closer... Much appreciated!