FIGURE 1. Simplified geological map of the Upper Devonian and Lower Carboniferous Fairfield Group outcrop, Lennard Shelf, northern Canning Basin, showing sampled sites at Oscar Hill and Laurel Downs (after Druce and Radke, 1979).
FIGURE 2. Stratigraphy and correlation of Upper Devonian and Lower Carboniferous units of the Lennard Shelf (after Smith et al., 2013). Approximate temporal positions of the sampled localities: 1, OH4; 2, 198480; 3, 198404; 4, LG-1; and 5, TS-1. Abbreviations: Fm, Formation; and Lst, Limestone.
FIGURE 3. Late Devonian and Early Carboniferous shark teeth from the Lennard Shelf, Canning Basin, Western Australia. 1-4, Ageleodus sp., WAM 15.6.23, sample 198404, in lingual view (1), WAM 15.6.34, sample TS-1, in labial (2) and lingual (3) views, and WAM 15.6.33, sample TS-1, in lingual view (4); 5-7, Phoebodus cf. turnerae, WAM 15.6.28, sample OH-4, in occlusal (5 ), labial (6) and lateral (7) views; 8-11, Thrinacodus ferox , WAM 15.6.32, sample LG-1, in occlusal view (8 ), WAM 15.6.8, sample 198404, in occlusal view (9), WAM 15.6.11, sample 198404, in lateral view (10), and WAM 15.6.9, sample 198404, in occlusal view (11); 12-16, Stethacanthus ? sp., WAM 15.6.6, sample 198404, in occlusal view (12), and WAM 15.6.7, sample 198404, in basal (13), lingual (14), occlusal (15) and labial (16) views. Scale bar length: 1-4, 1 mm; 5-7, 0.5 mm; 8-11, 0.25 mm; 12, 0.5 mm; 13-16 , 0.5 mm.
FIGURE 4. Ctenacanthiform teeth from the Lower Carboniferous Laurel Formation, Laurel Downs, Lennard Shelf, Canning Basin, Western Australia. 1 - 7, Cladodus thomasi, WAM 15.6.50, sample 198404, in lingual view (1), WAM 15.6.25, sample 198404, in occlusal view (2 ), WAM 15.6.12, sample 198404, in lingual (3) and labial views ( 4), WAM 15.6.19, sample 198404, partial platform and crown in lingual view (5), and WAM 15.6.13, sample TS-1, in occlusal (6) and labial (7) views; 8 - 12, Cladodoides cf. wildungensis, WAM 15.6.15, sample 198404, in lingual (8), occlusal (9) and labial (10) views, WAM 15.6.16, sample 198404, in labial (11) and lingual (12) views. Scale bar length: 1 - 7, 1 mm; 8 - 10, 0.25 mm; 11 - 12, 0.5 mm.
FIGURE 5. Ctenacanthiform teeth from the Lower Carboniferous Laurel Formation, Laurel Downs, Lennard Shelf, Canning Basin, Western Australia. 1 - 5, Cladodontomorphi indet. sp., WAM 15.6.5, sample 198404, in lingual (1), lateral (2), labial (3 ), basal (4) and occlusal (5) views; 6 - 11, Ctenacanthiform gen. et sp. indet. 1, WAM 15.6.24, sample 198404, in lingual view (6), WAM 15.6.36, sample TS-1, in lingual view ( 7), WAM 15.6.35, sample TS-1, in lingual view (8), WAM 15.6.37, sample TS-1, in labial (9) and lateral (10) views, and WAM 15.6.35, sample TS-1, in labial view (11); 12 - 15, Ctenacanthiform gen. et sp. indet 2, WAM 15.6.3.8, in lingual (12 ), occlusal (13), labial (14) and basal (15 ) views. Scale bar length: 1-5, 10 mm; 6-11, 0.5 mm; 12-15, 5 mm.
FIGURE 6. Protacrodont teeth from Lower Carboniferous Laurel Formation, Laurel Downs, Lennard Shelf, Canning Basin, Western Australia. 1, Protacrodus aequalis, WAM 15.6.43, sample TS-1, in lingual view ( 1); 2 - 4, Protacrodus sp. 1, WAM 15.6.45, sample TS-1, in lingual (2), occlusal (3) and labial (4) views; 5 - 12, Deihim mansureae, WAM 15.6.17, in lingual view (5), WAM 15.6.18, sample 198408, in occlusal view (6), WAM 15.6.46, sample TS-1, in lingual view (7), WAM 15.6.48, sample TS-1, in lingual view ( 8), WAM 15.6.19, sample 198404, in labio-basal view (9 10), WAM 15.6.49, sample TS-1, in labio-basal view (11), and WAM 15.6.18, sample 198404, in lateral view (12); 13-16, Dalmehodus cf. turnerae, WAM 15.6.30, sample LG-1, in lingual (13 ) and labial (14) views, WAM 15.6.44, sample TS-1, in occlusal ( 15) and lateral (16) views. Scale bar length: 1 - 45 - 12, 1 mm; 13 16, 0.25 mm.
FIGURE 7. Shark teeth from the Upper Devonian Gumhole Formation, Oscar Hill and Lower Carboniferous Laurel Formation, Laurel Downs, Lennard Shelf, Canning Basin, Western Australia. 1 - 2, Protacrodontidae gen. et sp. indet., WAM 15.6.29, sample OH-4, in lingual (1 ) and labial (2) views; 3-5, Lissodus sp., WAM 15.6.42, sample TS-1, in lingual (3), occlusal (4) and labial (5) views; 6 - 7, Hybodontoidea gen. et sp. indet., WAM 15.6.41, sample TS-1, in lingual (6 ) and labial (7) views; 8 - 11, Euselachii gen. et sp. indet.1, WAM 15.6.21, sample 198404, in lingual view (8 ), WAM 15.6.20, sample 198404, in occlusal view (9), WAM 15.6.27, sample 198404, in occluso-lingual view (10), and WAM 15.6.39, sample TS-1 in labial view (11); 12 - 13, Euselachii gen. et sp. indet. 2, WAM 15.6.40, sample TS-1, in occluso-lingual view (12) and WAM 15.6.22, sample TS-1, in labial view (13); 14 - 17, Holocephali gen. et sp. indet. 1, WAM 15.6.4, sample 198404, in occlusal view (14), and WAM 15.6.3, sample 198404, in lingual (15), labial (16) and occlusal (17) views. Scale bar length: 1-2, 0.5 mm; 3 - 5, 0.4 mm; 6 - 7, 0.75 mm; 8 - 10, 0.3 mm; 11, 1 mm; 12 - 13, 0.6 mm; 14 - 17 , 5 mm.
FIGURE 8. Maps depicting common taxa between the Canning Basin and other areas in Gondwana and Laurentia for the Late Devonian (1, Frasnian and Famennian chondrichthyans - * indicating Frasnian age, ^ indicating Famennian age) and Early Carboniferous (2, Tournaisian to Visean) (base map modified from Scotese and McKerrow, 1990; Golonka et al., 1994; Metcalfe, 2011). Abbreviations: A, Khor Virap and Erytch, Armenia; A i, Carnarvon Basin, Australia; A ii, Canning Basin, Australia; A iii, Burdekin Star, Australia; A iv, Broken River, Australia; B, Belgium; Ch, Hunan, South China; F, Montagne Noire, France; G, Thuringia, Germany; I , Chahriseh, Dalmeh, Hojedk, Hutk, and Kale-Sardar, Iran; Ir , Kilbride, Ireland: M, Tafilalt, Morocco; N, Nevada, Utah, and New Mexico, North America; P, Holy Cross Mountains, Poland; and R, South Urals, Russia. Sources of information: Armenia (Ginter et al., 2011), Australia (Turner and Dring, 1981; Turner, 1982; Trinajstic, 2001; Trinajstic and George, 2009; Roelofs et al., 2015), Royseux, Belgium (Derycke-Khatir et al., 2005), China (Wang and Turner, 1985; Ginter and Sun 2007), France (Derycke-Khatir et al., 2005), Germany (Ginter, 1999), Iran (Long and Hairapetian, 2000; Ginter et al., 2002; Hairapetian and Ginter, 2010), Ireland (Duncan, 2003), Morocco (Ginter et al., 2002; Derycke et al., 2008), North America (Ginter, 2001; Ivanov and Lucas, 2011), Poland (Ginter, 1990, 1995; Ginter and Ivanov, 2000), Russia (Ginter, 1994; Ginter and Ivanov, 1992, 2000; Ivanov, 1996), and South China (Lelièvre and Derycke, 1998).
