SUPPLEMENTAL DATA 1—List of previous Early Cretaceous aporrhaid records from South America—excluding Argentina—and Antarctica. 

Colombia:
Rostellaria boussingaulti d’Orbigny, 1842 (p. 79, pl. 18, fig. 2, 3), Aptian–Albian, Cundinamarca.
Rostellaria angulosa d’Orbigny, 1842 (p. 80, pl. 18, fig. 4), Aptian–Albian, Cundinamarca.
Rostellaria americana d’Orbigny, 1842 (p. 80, pl. 18, fig. 5), Aptian–Albian, Cundinamarca. Gerhardt (1897) also recorded this species.
Chenopus (Tessarolax) aff. bicarinata Deshayes var. evolutior Jaworski, 1938 (p. 114, pl. 23, fig. 3a–c), Aptian, Santander. 
Chenopus (Tessarolax) aff. bicarinatoides Wollemann (Jaworski, 1938: p. 115, pl. 23, fig. 4), Aptian, Santander. 
‘Aporrhais’ priamus Coquand en Mallada (Etayo-Serna, 1985: p. 26, pl. 1, fig. 11), Aptian, Sierra Nevada del Cocuy.
Drepanochilus aff. obtusa (Pictet and Campiche) (Etayo-Serna, 1985: p. 26), Aptian–Albian, Sierra Nevada del Cocuy. 
Venezuela:
Anchura cathedralis von der Osten, 1957 (p. 589, pl. 65, fig. 11, 12), Aptian, Barranquín Formation. Also recorded by Etayo-Serna (1985) in the Lower Cretaceous of Colombia.
Anchura sucrensis von der Osten, 1957 (p. 589, pl. 65, fig. 26), Aptian, Barranquín Formation.
Peru:
Rostellaria sp. (Fritzsche, 1924: p. 49, pl. 3, fig. 5), Barremian.
Chile:
Rostellaria aff. bicarinata Quenstedt (Tavera, 1956), upper Hauterivian–Barremian, Atacama.
Aporrhais sp. (Tavera, 1956), Barremian–Aptian, Atacama.
Antarctica (Alexander I Island):
Anchura (Tessarolax) antarctica Cox, 1953 (p. 6, pl. 2, fig. 9–11), Aptian. Also recorded by Thomson (1971: p. xx, fig. 3a–d) as Anchura? antarctica. 
Anchura? sp. α (Thomson, 1971: p. 54, fig. 3e), Lower Cretaceous. 
Anchura? sp. β (Thomson, 1971: p. 54, fig. 3f, g), Lower Cretaceous.