Hi, Alfonso.

The spiny tree looks like a Kapok tree, but I might be wrong (see link below). Hope this helps...

Kate

Here is a link that might be useful: kapok tree...?

here is from pic from a nersery in Michigan. I think it might be the same.{{gwi:482646}}

Neat pix, Alfonso! That 1st one might be Sansevieria cylindrica. See link below.

~Rosemarie

Here is a link that might be useful: Sansevieria cylindrica

Thank you for your ID, yes Sansevieria cylindica is the first one, and the second one is the same of the big tree that I picture.
Alfonso

I don´t found cylindrica, but pearsonii of the Agavacea family.
I don´t know, how an Angola plant is in an archeologhycal site in Yucatan
Alfonso

Alfonso:
The genus Ceiba lives in Mexico too, but is a different species.
Saludos.