Scotese's Paleomap Project (http://www.scotese.com) or http://jan.ucc.nau.edu/~rcb7/paleogeographic.html may help

World maps or for certain region?

world map, with a specific focus on past seaways (Panama, Tethys, Gibraltar, Sunda-Sahul ecc.), specifically from 20Ma to present.

Thanks Zhi-Teng and Luciano

Hi Agostino,

Perhaps these webpages can help you:

http://www.palaeogeography.net/cenozoic-maps.html

https://geosci.uchicago.edu/~rowley/Rowley/Paleogeographic_Atlas_Project.html

Cheers,

Camilo

Hi Agostina,

You could also check out the free software GPlates: http://portal.gplates.org/

Best, Thomas

Thanks Camilo and Thomas.

It seems that the free software GPlates is exactly what i was looking for! Thank you so much, Thomas!

Hi Agostina, Check https://portal.gplates.org/, you will find what you need.