Doratodon undetermined

Blanco, Alejandro, Puértolas-Pascual, Eduardo, Marmi, Josep, Moncunill-Solé, Blanca, Llácer, Sergio & Rössner, Gertrud E, 2020, Late Cretaceous (Maastrichtian) crocodyliforms from north-eastern Iberia: a first attempt to explain the crocodyliform diversity based on tooth qualitative traits, Zoological Journal of the Linnean Society 189 (2), pp. 584-617 : 590

CF. DORATODON SP.

Localities: Molí del Baró-1, Serrat del Rostiar-1, L’Espinau, Basturs Poble.

Material: MCD-5560, IPS-96631, IPS-96638, IPS-96661, IPS-105931, MCD-4856 ( Fig. 2R–X ).

Description: The best-preserved teeth are 3.1‒5.1 mm high basiapically and 2.2‒4.8 mm wide mesiodistally, but some fragmentary ones are larger. The crown is high and triangular shaped, with a well-marked basal constriction. The apex is lingually inclined. The tooth is labiolingually compressed, although in a lesser degree than in theropod dinosaurs. The cross-section is elliptical. The enamel is nearly smooth, and both mesial and distal carinae show true denticles ( Fig. 2T–V ).

Remarks: Doratodon teeth are subtriangular in shape, compressed labiolingually and present well-defined denticles in both anterior and posterior carinae (e.g. Grigorescu et al., 1999; Martin et al., 2006; Rabi & Sebők, 2015). Doratodon ibericus was described from the Upper Campanian of Sierra Perenchiza Formation (Valencia, Spain; Company et al., 2005), and remains of Doratodon carcharidens (Bunzel, 1871) Seeley, 1881 have been described in the Santonian of the Csehbánya Formation (Iharkút, Hungary) and in the lower Campanian of the Grünbach Formation (Muthmannsdorf, Austria) ( Rabi & Sebők, 2015). However, the characters present in the isolated teeth from the Tremp Basin are insufficient to assign them beyond the genus level. Unlike morphotypes I and II, tooth-morphotype III shows true denticles ( Fig. 2 AC–AE).

Figures

Figure 2. Ziphodont morphotypes: A–Q, Mesoeucrocodylia indet.; R–AG, cf. Doratodon. A, B, MCD5561 in labial and apical views. C–F, MCD5562 in labial, distal and mesial views. G–J, MCD5564 in labial, lateral, lingual and apical views. K, detail of the carina. L, MCD5561 in distal view (SEM). M, N, MPZ2010-948 in lateral view and detail of the carina (SEM). O–Q, MCD5564 (CT-scan) in lingual, lateral and labial views. R–U, IPS-96661 in labial, lateral and lingual views with detail of the carina. V–X, MCD4856 in lingual, lateral and apical views. Y, Z, IPS-105945 in lingual and apical views, with reconstructions (grey). AA–AC, IPS-96661 in labial and lingual views with detail of the carina (SEM). AD–AE, MCD5560 with detail of the carina (SEM) and (AF–AG) CT-scans in lingual and lateral views.