Genus: Petrustitan DIEZ DIAZ, MANNION, CSIKI-SAVA & UPCHURCH, 2025
Etymology: Greek, petra, 'stone, rock" and Greek, titan, Greek giants": alluding both to the place of its type locality, Sanpetru (a shorthand for Saint Peter, in Romanian) village in the cetnral Hateg Basin, as well as the origin of the holotype, comeing from the rocky outcrops of the Sinpetru Formation exposed in this area.

Species: hungaricus (HUENE, 1932) DIEZ DIAZ, MANNION, CSIKI-SAVA & UPCHURCH, 2025
= Titanosaurus hungaricus HUENE, 1929 (nomen dubium)
Etymology: In reference to Hungary.
= Magyarosaurus hungaricus (HUENE, 1929) KUHN, 1939 (nomen dubium)

Lectotype and paralectotype: NHUMI (old BMNH) R3853 (Huene incorrectly listed as 3833), Individual B

Locality: Szentperfalva, Sibisel River Valley, south of Sanpetru locality, central Hateg Basin, Hunedora County, Romania.

Horizon: Informaly subunit, Sinpetru Formation.

Biostratigraphy:

Age: Early to early Late Maastrichtian Stage, Uppermost Senonian Subepoch, Uppermost Gulf Epoch, Late Cretaceous.

Material: Left fibula (holotype), tibia (paratype).

Referred material:

Individual G

MCRD 148: Right ilium.

MCDRD 149: Right ulna.

MCDRD 150: Right radius.

MCDRD 152: Right metacarpal I

MCRD 153: Left fibula.

MCDRC 255, 266, 267, 268, 269, unnumbered: 6 caudal vertebrae.

STEIN, CSIKI, CURRY ROGERS, WEISHAMPEL, REDELSTORFF, CARBALLIDO & SANDER, 2010

Locality: Valioara-Budurone, Romania.

Horizon:

Biostratigraphy:

Age: Maastrichtian Stage, Uppermost Senonian Subepoch, Uppermost Gulf Epoch, Late Cretaceous.

Material:

MAFI Ob.3014: Right humerus.