GSA press release - Geology August 2016

Part of figure 1. from highlighted article by Gioncada et al. A: Main baleen features of an extant rorqual, at different scales; tubule diameter ~0.5 mm (modified and redrawn from Szewciw et al., 2010). B: Location of Cerro Colorado, Peru. C: Left baleen rack of the balaenopteroid specimen M1 as found in the field, with drawing showing the original position in the whale skull. D: Right baleen rack of specimen M1. Dolomite concretion is indicated. Click on the image for a somewhat larger figure; higher-resolution images are available from the authors. Whales in the Desert