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Pterodactylus scolopaciceps Meyer, 1860 (Pterosauria, Pterodactyloidea) from the Upper Jurassic of Bavaria, Germany: The Problem of Cryptic Pterosaur Taxa in Early Ontogeny

Figure 4

A graph of Solnhofen pterodactyloids compiled from data available in Wellnhofer [15].

Skull length plotted along the x-axis, wing metacarpal length plotted along the y-axis. Despite clear morphological differences a crowded data set has resulted in all specimens appearing similar. A similar situation is observed when all other elements plotted against skull length. P. antiquus filled circles, P. kochi open squares, Ctenochasma open circles. R2 values: all specimens = 0.931; P. antiquus specimens = 0.998; P. kochi specimens = 0.959; Ctenochasma gracile + P. elegans ( = Ctenochasma elegans) = 0.942. Dashed lines are regression lines for each respective taxon, the solid line is the regression line for all specimens.

Figure 4

doi: https://doi.org/10.1371/journal.pone.0110646.g004