Supplementary material for 
Jadwiszczak, P.: „Taxonomic diversity of Eocene Antarctic penguins: A changing picture”

Morphological character matrix

This dataset was used to create a cladogram from Fig. 5b. It differs from that of Ksepka & Thomas (2012), used to find a strict consensus tree presented in Fig. 5a, in respect to some character state assessments and two character definitions.

Character	123456789111
012	
M_giganteus	00?00?0?0101	
P_klekowskii	210000210210	
P_gunnari	210000210210	
A_nordenskjoeldi	110?11010210	
A_grandis	110?11010210	
D_wimani	21?0201101??	
D_gracilis	110100110111	
D_arctowskii	210100110011	
D_larseni	110100110011	
M_polaris	11?000100111	
M_exilis	111000100111	

Ordered characters: 1, 6, 10.

Changes to character definitions

 Character
(this study)	Corresponding character in Ksepka 
& Thomas 2012	Remarks		
1	200	-		
2	202	-		
3	203	-		
4	204	-		
5	201	Corrected;  tarsometatarsal medial margin: smooth (0), with pronounced convexity (1), with elongated pit (2)		
6	205	-		
7	206	-		
8	208	Corrected; opening for medial vascular foramen (proximal): located within the hypotarsal sulcus - medial hypotarsal crest is more abaxial (0), distal to medial crest (if present) (1)		
9	207	-		
10	209	-		
11	210	-		
12	211	-		

Reference
Ksepka, D.T. & Thomas, D.B. 2012. Multiple cenozoic invasions of Africa by penguins (Aves, Sphenisciformes). Proceedings of the Royal Society of London B, 279, 1027-1032, doi: 10.1098/rspb.2011.1592.