Just out @ American Journal of Botany A liana from the lower Miocene of Panama and the fossil record of Connaraceae Author(s) Nathan A. Jud and Chris W. Nelson Abstract: PREMISE OF THE STUDY: Permineralized wood is common in the Miocene beds exposed during the expansion of the Panama Canal. We describe a stem with the distinctive anatomy of a liana and evaluate the evolutionary, biogeographic, and ecological significance of this
Just out @ Journal of Paleontology Late Miocene chondrichthyans from Lago Bayano, Panama: Functional diversity, environment and biogeography Author(s) Victor J. Perez, Catalina Pimiento, Austin Hendy, Gerardo González-Barba, Gordon Hubbell, Bruce J. MacFadden Abstract: This newly described chondrichthyan fauna from the late Miocene Chucunaque Formation of Lago Bayano reveals a prolific and highly diverse assemblage from Panama, and one of the richest shark faunas from the Neotropics. Strontium geochronology indicates an
Just out @ Journal of Foraminiferal Research Title: Paleoenvironments of the Upper Miocene Tuira Formation, Darien, Panama Author(s) Ozlem Gurocak-Orhun, Laurel S. Collins Abstract: Concurrent with the final collision of South America and Central America, sediments of the Upper Miocene Tuira Formation (Darien Province, southeastern Panama, Pacific side) were deposited 11.2–8.6 Ma within one of the few remaining straits of the Central American Seaway that connected tropical Atlantic and Pacific waters.
Just out @ Palaeogeography, Palaeoclimatology, Palaeoecology Abstract We use time-series δ18O and δ13C data from seawater and live-collected Conus shells from Panama’s Pacific coast to test the fidelity of the gastropod’s δ13C values as a proxy for the δ13C of marine dissolved inorganic carbon (DIC), and the potential of δ18O-δ13C correlations in shell profiles for resolving relative magnitudes of seasonal upwelling and freshening. Water samples were collected from March 2011