TABLE 1. Dental measurements (in mm) of Tetragonostylops aff. T. apthomasi from Cañadón Vaca compared with Tetragonostylops apthomasi from Itaboraí. Measurements of Itaboraí specimens taken from Paula Couto (1952). Abbreviations: mdl, maximum distolabial length; trw, transverse width. * denotes approximate measurement.

Taxon Specimen C1 P2 P3 P4 M1 M2 M3
mdl trw mdl trw mdl trw mdl trw mdl trw mdl trw mdl trw
Tetragonostylops aff. T. apthomasi from Cañadón Vaca MPEF PV 5479 14.3 7.9 8.1 7.7 8.2 9.9 8.5 12.9 10.3 14 13 16.5* 13.2* 16.8*
MACN Pv CH1248                 10.8 12.6        
AMNH 28450                         12.5 18
Tetragonostylops apthomasi from Itaboraí DGM 355-M     6.6 4.3 7 8.2 7 10.5 10 11.9 12 13.8 11.2 14
DGM 287-M                 9.2 10.5 11 13    
MNRJ 1830-V                     12 13.8 12 15.2
MNRJ 1829-V                     12* 13* 11 13.2

 

 

TABLE 2. Dental measurements (in mm) of cf. Scaglia cf. kraglievichorum from Cañadón Vaca compared with the holotype of Scaglia kraglievichorum (MMP M-207) and with Albertogaudrya unica . Abbreviations: mdl, maximum distolabial length; trw, transverse width. * denotes approximate measurement.

Taxon Specimen P2 P3 P4 M1 M2 M3
mdl trw mdl trw mdl trw mdl trw mdl trw mdl trw
cf. Scaglia cf. kragilevichorum MPEF PV 5478 11.6 8.1 12.2 16.3 13.4   19.3     33 23.7 34.7
Scaglia kraglievichorum MMP 207 (holotype)             19.4 21.4        
Albertogaudrya unica MACN A 12000     17.8 26.6         28.8 37.1    
MACN A 12004                 30.6 38.1    
AMNH 28639         18.5 32 25.1 36.2        

 

 

TABLE 3. Dental measurements (in mm) of Astrapotheriidae genus and species A from Cañadón Vaca compared with Albertogaudrya unica. Abbreviations: mdl, maximum distolabial length; trw, transverse width.

Taxon Specimen i3 p2 p3 p4
mdl trw mdl trw mdl trw mdl trw
Astrapotheriidae genus and species A MPEF PV 5477 10 8.7 15.1 9 15.2 10.3 15.5 12.2
Albertogaudrya unica MACN A 12001     16.3 12.5 20 15.3 20.5 16
MACN A 12002         17.3 13.3 20.1 15.3