Allometries between body mass (BM) and egg mass (EM) of birds, crocodiles, and tortoises and their comparison to non-avian dinosaurs.

<p>(<b>A</b>) General comparison of dinosaur EMs to the EM allometry of birds (grey squares/line), crocodiles (green triangles/line) and tortoises (dark green circles/line). (<b>B</b>) Detailed comparison of dinosaur EMs to the EM allometry of birds. Grey continuous line = regression line of birds. Grey scattered lines = 95% prediction interval of the bird regression. Dinosaurs in the graphs = theropods (yellow squares, from left to right): <i>Troodon</i><i>formosus</i>, <i>Oviraptor</i><i>philoceratops</i>, <i>Citipati</i><i>osmolskae</i><i>, </i><i>Lourinhanosaurus</i><i>antunesi</i>; hadrosaurs (light blue triangles, from bottom to top): <i>Maiasaura</i><i>peeblesorum</i>, lambeosaurine dinosaur; sauropod oospecies (red circles, from bottom to top): <i>Megaloolithus</i><i>patagonicus</i>, <i>Megaloolithusmammilare</i>; prosauropod (orange circle): <i>Massospondylus</i><i>carinatus</i>. Black error bars = possible value ranges for a non-avian dinosaur taxon (left/lower bar = minimum value derived from the fossil record, right/upper bar = maximum value). (<b>C</b>) Analogous to (B), but for crocodiles (green triangles/lines) and dinosaurs. (<b>D</b>) Analogous to (B), but for tortoises (dark green circles/lines) and dinosaurs.