Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970 )

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970)

Plate 2, Figs 7 View FIGURE 7 –13

* Rhincodon miocaenicus Antunes & Jonet 1970: 152 , text-fig. 5, pl. 9, figs 42–44.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) — Cappetta & Ward 1977: 198, pl. 27, figs 2–4. Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) —Pfeil in Barthelt et al. 1991: 202, pl. 3, fig. 1.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) — Balbino 1995: 65, pl. 7, figs 3–6.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) — Antunes et al. 1999a: 116.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) — Purdy et al. 2001: 202, text-figs P–R.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) — Antunes & Balbino 2004: 76, figs 3a–g.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) — Cappetta & Carvalho 2006: 50, pl. 5, figs 1–2.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) —Renecke et al. 2011: 54.

Megascyliorhinus miocaenicus ( Antunes & Jonet, 1970) — Cappetta 2012: 265.

Material. 21 teeth. NHMW 2025 View Materials /0177/0020 ( 7 specimens) .

Description. Generally, the teeth possess a very high and elongated principal cusp that is three to four times as high as its base width, with a minute cusplet at each side of the principal cusp. The first three teeth ( Pl. 2, figs 7–9) are upper teeth of which the first one has a typical root with two root lobes that diverge at an angle of approximately 90°. The root lobes of the following teeth are significantly wider diverged. The lower teeth ( Pl. 4, figs 10–13) also possess a high but narrower principal cusp and the root lobes become more diverged in lateral teeth.

Discussion. Since 1970, the original combination name Megascyliorhinus miocaenicus is generally accepted for this species. There is no reason for further discussion, and we follow previous authors here.

Distribution. Lower Miocene: Paratethys, Austria ( Schultz 2013). discussion,ene: southern France (Capetta 1987). Lower Pliocene, Tunisia (Capetta 1987).

Distribution in Portugal. Upper Miocene: (Tortonian), Tagus Basin ( Antunes & Jonet 1970), Algarve Basin, Cacela Fm. (this paper); (Messinian) Alvalade Basin, Esbarrondadoiro Fm. ( Balbino 1995; Antunes & Balbino 2004).