Figure 2 - uploaded by Lars Barten
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Photograph of the north-western corner of the former ENCI-HeidelbergCement Group quarry (SintPietersberg, Maastricht) with good exposures of nearly all members of the Maastricht Formation and site of provenance of NHMM 2022 009 (indicated by a blue arrow). Photograph: M.J.M. Deckers.
Source publication
The first isolated and well-preserved phalanx (autopodial element) of a generically and specifically indeterminate (probably xenopsarian) plesiosaur from the Maastrichtian type area (south-east Netherlands) is described and illustrated. Morphological features of this bone, such as the articular subchondral surfaces, allow it to be distinguished fro...
Contexts in source publication
Context 1
... herein (collections of the Natuurhistorisch Museum Maastricht, NHMM 2022 009, leg. J.H.M. Barten), discovered in April 2016, originates from the fossiliferous basal lag of the Emael Member (Maastricht Formation), which rests on the Romontbos Horizon, as exposed in the north-western corner of the former ENCI-HeidelbergCement Group quarry ( Fig. 2; Table 1). According to the most recent chemostratigraphical age model for the type Maastrichtian ( Vellekoop et al., 2022), NHMM 2022 009 is around 66.55 million years old. Strata assigned to the Emael Member were laid down in a fully marine environment, although there must have been nearby landmasses, as is indicated by the discovery ...
Context 2
... and less constricted than NHMM 2022 009 (Adams, 1997, figs 11B, 13;Schumacher & Martin, 2015, fig. 13). The polycotylid Palmulasaurus quadratus (see Albright et al., 2007b) from the Upper Cretaceous (lowermost Turonian) Tropic Shale of southern Utah shows short and blocky proximal phalanges as well, with concave anterior and posterior surfaces (Albright et al., 2007a, fig. 5). However, the distal, more elongated phalanges of Palmulasaurus quadratus do resemble the morphology of NHMM 2022 ...
Context 3
... herein (collections of the Natuurhistorisch Museum Maastricht, NHMM 2022 009, leg. J.H.M. Barten), discovered in April 2016, originates from the fossiliferous basal lag of the Emael Member (Maastricht Formation), which rests on the Romontbos Horizon, as exposed in the north-western corner of the former ENCI-HeidelbergCement Group quarry ( Fig. 2; Table 1). According to the most recent chemostratigraphical age model for the type Maastrichtian ( Vellekoop et al., 2022), NHMM 2022 009 is around 66.55 million years old. Strata assigned to the Emael Member were laid down in a fully marine environment, although there must have been nearby landmasses, as is indicated by the discovery ...
Context 4
... and less constricted than NHMM 2022 009 (Adams, 1997, figs 11B, 13;Schumacher & Martin, 2015, fig. 13). The polycotylid Palmulasaurus quadratus (see Albright et al., 2007b) from the Upper Cretaceous (lowermost Turonian) Tropic Shale of southern Utah shows short and blocky proximal phalanges as well, with concave anterior and posterior surfaces (Albright et al., 2007a, fig. 5). However, the distal, more elongated phalanges of Palmulasaurus quadratus do resemble the morphology of NHMM 2022 ...
