As mentioned before

It's difficult to determine the exact name just by a picture.
The members of the different Bufo (Rhinella) groups are often verry much alike,
some can only be seperated by extensive DNA research.

Going by the info you provided, that they are absolutely from Suriname, the candidates from the Bufo granulosus complex are Bufo [Rhinella] granulosus humboldti and merianae.
Keep in mind, not every import from a particular country gives a guarantee that the specimens are caught there.

In my reasoning, the mix up with the name of Bufo marmorata (marmoratus) is easiest to explain by a species formerly known as Chaunus marmoratus.
This is changed into Chaunus granulosus and later on to Rhinella granulosus.
This species eventually is taken up in the complex as we know it.
The only side note is that this species originate from Brasil.
But then again, Surinam is a neigbouring country, so it won't surprise me that the Brasilian member of the complex would be shipped trough Surinam.
After all, it is a complex of possible variaties, species and/or sub-species of wich some are almost identical, so for the collectors it is sometimes impossible to seperate them from eachother.

You might try to email some researchers working with the complex daily.
In most research papers they provide you with an email adress for inquiries.
Maybe if you send the pictures to a researcher from Brasil and one from Surinam they can tell them apart just by a picture,
altough i doubt they can for sure.