| Summary: | Figure 1. Chronostratigraphy and correlation of Australian fossil penguin-bearing units, compared with the fossil record of Sphenisciformes on other continents. Note that the vertical ranges of stratigraphic units represent estimates of geologic age maxima and minima for penguin-bearing horizons, not necessarily discrete time-spans of deposition. Geologic timescale is after Gradstein et al. (2004) with updates from Walker and Geissman (2009). See Table 1 for references to ages of Australian units. Ages of African units: Hendey (1981); Roberts et al. (2011); Ksepka and Thomas (2012). Ages of Antarctic units: Dingle and Lavelle (2000); Jadwiszczak (2006); Marenssi et al. (2012). Ages of New Zealand units: White and Waterhouse (1993); Cooper (2004); Slack et al. (2006); Ksepka et al. (2012). Ages of South American units: Devries (1998); Scasso et al. (2001); Celma and Cantalamessa (2007); Achurra et al. (2009); Malumián and Náñez (2011); Uhen et al. (2011). Published as part of Park, Travis & Fitzgerald, Erich M.G., 2012, A review of Australian fossil penguins (Aves: Sphenisciformes), pp. 309-325 in Memoirs of Museum Victoria 69 on page 312, DOI:10.24199/j.mmv.2012.69.06, http://zenodo.org/record/12212344
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