List of specimens studied.

Accession number Material Locality/Age
AMU-CURS-006 Purussaurus isolated tooth North of Urumaco Town, Urumaco Formation, Venezuela
AMU-CURS-022 Purussaurus isolated tooth North of El Picache, Urumaco Formation, Venezuela
AMU-CURS-033 Purussaurus mirandai isolated teeth Urumaco Formation, Venezuela
AMU-CURS-049 C. wannlangstoni (sensu Salas-G. et al., 2015; was labelled “ Caiman lutescens”) Corralito, Urumaco Formation, Venezuela
AMU-CURS-057 Purussaurus cf. mirandai (previously referred specimen of P. mirandai by Aguilera et al. 2006) Tío Gregorio, Urumaco Formation, Venezuela
AMU-CURS-067 Globidentosuchus brachyrostris additional specimen Playa Larga, Urumaco Formation, Venezuela
AMU-CURS-073 Mourasuchus sp. Tío Gregorio, Urumaco Formation, Venezuela
AMU-CURS-083 Globidentosuchus cf. G. brachyrostris Coquina Quebrada Bejucal, Urumaco Formation, Venezuela
AMU-CURS-084 Globidentosuchus cf. G. brachyrostris Coquina Quebrada Bejucal, Urumaco Formation, Venezuela
AMU-CURS-090 Caimaninae indet. (was Caiman) North of Mamon, Corralito, Urumaco Formation, Venezuela
AMU-CURS-100 Caimaninae indet. Norte El Picache, Urumaco Formation, Venezuela
AMU-CURS-101 Purussaurus isolated tooth North of El Picache, Urumaco Formation, Venezuela
AMU-CURS-105/106 Caimaninae indet. (was Caiman brevirostris) West of Quebrada Tío Gregorio, Urumaco Formation, Venezuela
AMU-CURS-113 Caimaninae indet. (was Caiman brevirostris in Riff et al. 2010 = Caiman sp. in Scheyer et al., 2013 from Loc. Puente Rio Urumaco/Playa Larga) just NE of ‘Northwest San Rafael’; Cerro Amarillo, Urumaco Formation, Venezuela
AMU-CURS-135 Purussaurus mirandai paratype material El Hatillo, Urumaco Formation, Venezuela
AMU-CURS-162 Purussaurus additional unprepared specimen 1.5 km north of El Hatillo, Urumaco Formation, Venezuela
AMU-CURS-212 Mourasuchus arendsi (previously identified as M. nativus) West of El Mamon, Urumaco Formation, Venezuela
AMU-CURS-217 Caimaninae indet. (previously identified as Melanosuchus fisheri) Puente Rio Urumaco/Playa Larga, Urumaco Formation, Venezuela
AMU-CURS-218 Mourasuchus arendsi (previously identified as M. nativus) Puente Rio Urumaco/Playa Larga, Urumaco Formation, Venezuela
AMU-CURS-222 Globidentosuchus brachyrostris holotype El Picache, Urumaco Formation, Venezuela
AMU-CURS-223 Globidentosuchus brachyrostris additional specimen El Picache, Urumaco Formation, Venezuela
AMU-CURS-224 Globidentosuchus brachyrostris additional specimen El Picache, Urumaco Formation, Venezuela
AMU-CURS-234 Caimaninae aff. Melanosuchus fisheri Medina, 1976 El Hatillo, Urumaco Formation, Venezuela
AMU-CURS -301 Globidentosuchus brachyrostris additional specimen Domo de Agua Blanca, Urumaco Formation, Venezuela
AMU-CURS -383 Globidentosuchus brachyrostris additional specimen Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-384 Purussaurus sp. Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-394 Purussaurus sp. Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-395 Mourasuchus sp. Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-396 Mourasuchus sp. Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-429 Caimaninae indet. (previously identified as Caiman brevirostris) El Mamón, Urumaco Formation, Venezuela
AMU-CURS-430 Mourasuchus sp. Loc Norte Las Huertas, SW of El Mamón, Urumaco Formation, Venezuela
AMU-CURS-442 Purussaurus sp., additional unprepared specimen Urumaco Formation, Venezuela
AMU-CURS -450 Globidentosuchus brachyrostris additional specimen Domo de Agua Blanca, Urumaco Formation, Venezuela
AMU-CURS-451 Caimaninae indet. Corralito Sur, Urumaco Formation, Venezuela
AMU-CURS-528 Purussaurus cf. P. mirandai Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-530 Mourasuchus sp. Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-537 Mourasuchus sp. Northwest San Rafael, Urumaco Formation, Venezuela
AMU-CURS-541 Purussaurus sp. North of El Picache, Urumaco Formation, Venezuela
AMU-CURS-601 Caimaninae indet. North of El Picache, Urumaco Formation, Venezuela
AMU-CURS-602 Purussaurus cf. P. mirandai North of El Picache, Urumaco Formation, Venezuela
AMU-CURS-606 Purussaurus sp. North of El Picache, Urumaco Formation, Venezuela
AMU-CURS-671 Purussaurus sp. Corralito east of Rio Urumaco, Urumaco Formation, Venezuela
AMU-CURS-685 Purussaurus cf. P. mirandai Urumaco Formation, Venezuela
AMU-CURS-695 Mourasuchus sp. Tío Gregorio, Urumaco Formation, Venezuela
AMU-CURS-748 Mourasuchus sp. El Hatillo, Urumaco Formation, Venezuela
AMU_CURS-768 Mourasuchus arendsi large posterior skull part El Vijiadero, ca. 6 km south west of Urumaco town, Lower Member, Urumaco Formation, Venezuela
MCNC-243 Melanosuchus fisheri holotype skull Corralito, Urumaco Formation, Venezuela
MCNC-1829 Caiman brevirostris El Picache, Urumaco Formation, Venezuela
MCNC-URU-76-72V Purussaurus mirandai referred specimen 0.5 km N of Quebrada Picache / 50 m E of Chiguaje Fault (sensu Patterson et al., 1972), Urumaco Formation, Venezuela
MCNC-URU-90-72V Purussaurus sp. 0.5 km N of Quebrada Picache / 50 m E of Chiguaje Fault (sensu Patterson et al., 1972), Urumaco Formation, Venezuela
MCNC-URU-110-72V lower jaw and skull of Mourasuchus sp. (heavily plastered/reconstructed specimen) 3.5 km N and 3? W of El Picache on up side of Chiguaje Fault (sensu Patterson et al., 1972), Urumaco Formation, Venezuela
MCNC-URU-111-72V Purussaurus sp. 3.5 km N and 3? W of El Picache on up side of Chiguaje Fault (sensu Patterson et al., 1972), Urumaco Formation, Venezuela
MCNC-URU-115-72V Purussaurus mirandai paratype material close to URU-76-72V, in bed of Quebrada Picache (sensu Patterson et al., 1972; ‘El Picache’ in Aguilera et al., 2006), Urumaco Formation, Venezuela
MCNC-URU-157-72V (was wrongly indicated as paratype material of Purussaurus mirandai, is postcranium of Purussaurus sp. instead) Capa de Tortugas/ Corralito (s sensu Patterson et al., 1972: locality data of 139-72V; ‘Tio Gregorio’ in Aguilera et al. 2006), Urumaco Formation, Venezuela
MCNC-URU-158-72V Purussaurus mirandai paratype material (was wrongly accessioned before) Capa de Tortugas/ Corralito, Urumaco Formation, Venezuela
MCNC-URU-2002-145 C. latirostris (was identified as “ Caiman lutescens”) Capa de Tortugas/ Corralito, Urumaco Formation, Venezuela
UNEFM-CIAAP-1297 Mourasuchus arendsi holotype Corralito, Urumaco Formation, Venezuela [‘Quebrada El Mamón. Río Urumaco / enero 1983‘ according to UNEFM catalogue]
UNEFM-CIAAP-1333 right maxilla from type loc. of M. arendsi - specimen missing Corralito, Urumaco Formation, Venezuela [‘Quebrada El Mamón. Río Urumaco / enero 1983‘ according to UNEFM catalogue]
UNEFM-CIAAP-1367 Purussaurus cranial and postcranial remains Right bank of Rio Urumaco, 1.5 (?) km N of El Hatillo?, Urumaco Formation, Venezuela
UNEFM-CIAAP-1368 large crocodylian teeth belonging to large gharial Right bank of Rio Urumaco, 1.5 (?) km N of El Hatillo?, Urumaco Formation, Venezuela
UNEFM-CIAAP-1368/1372 small Purussaurus skull fragment Right bank of Rio Urumaco, 1.5 (?) km N of El Hatillo?, Urumaco Formation, Venezuela
UNEFM-CIAAP-1369 Purussaurus mirandai holotype El Hatillo (sensu Aguilera et al., 2006), Urumaco Formation, Venezuela [same locality as -1368 according to UNEFM catalogue]
UNEFM-CIAAP-1378 Mourasuchus maxillary fragment Right bank of Rio Urumaco north of El Hatillo, Urumaco Formation, Venezuela [additional info: ‘octubre de 1983. (P-2: Pozo Dos)’ according to UNEFM catalogue]
UNEFM-CIAAP-1432 tooth of Purussaurus ? [‘P-2: Urumaco. Taparito. Este de la Quebrada Picacho / enero 1984‘ according to UNEFM catalogue]
UNEFM-CIAAP-1434 Purussaurus sp. lower jaw fragment Urumaco Formation, Venezuela
UNEFM-CIAAP-1445 Purussaurus mirandai paratype El Hatillo (sensu Aguilera et al., 2006), Urumaco Formation, Venezuela [‘Urumaco. Taparito. Este de la Quebrada Picacho / enero 1984‘according to UNEFM catalogue]
UNEFM-CIAAP-1447 Mourasuchus maxillary fragments [‘Urumaco. Taparito. Este de la Quebrada Picacho / enero 1984‘according to UNEFM catalogue]
UNEFM -VF-03 Mourasuchus sp. Urumaco Formation, Venezuela
UNEFM- VF-06 Caimaninae indet. Urumaco Formation, Venezuela
UNEFM- VF-017 Globidentosuchus cf. G. brachyrostris El Hatillo, Urumaco Formation, Venezuela
UNEFM- VF-019 Caimaninae indet. Urumaco Formation, Venezuela
UNEFM- VF-022 Caimaninae indet. Urumaco Formation, Venezuela

Additional specimens referred to in the text

MCN-USB no number Purussaurus cf. P. mirandai (Simon Bolivar Univ. specimen at the Museo Paleontológico Urumaco) Urumaco Formation, Venezuela
DGM 526-R Mourasuchus amazonensis holotype Solimões Formation, Acre, Brazil
MCZ 4336 Melanosuchus fisheri, referred skull Capa de Tortugas/ Corralito, Urumaco Formation
MLP 73-IV-15-8 Mourasuchus nativus holotype material Ituzaingó Formation, Paraná area, Argentina
MLP 73-IV-15-9 Mourasuchus nativus referred material Ituzaingó Formation, Paraná area, Argentina
MUSM 2377 Caiman wannlangstoni, holotype skull Pebas Formation, Iquitos area, Peru
MUSM 2378 Mourasuchus atopus (?) Pebas Formation, Iquitos area, Peru
UFAC-196 Caiman brevirostris holotype Solimões Formation, Acre, Brazil
UFAC-1424 was Mourasuchus nativus referred specimen, herein considered as M. arendsi Solimões Formation, Acre, Brazil
UCMP 39978 aff. Caiman wannlangstoni ?; “La Venta Caiman ” as “distinct entity of uncertain taxonomic affinities“ La Venta, Colombia
UCMP 38012 Mourasuchus atopus type specimen La Venta, Colombia
ZSM 76/1911 Melanosuchus niger, extant specimen extant species, no locality data
MACN PV 5416 C. latirostris, partial right rostrum Argentina
MACN PV 13551 C. lutescens, holotype (skull table) Argentina