Paleocene Mammals from Brazil – #365papers – 2018 – 67

de Paula Couto, 1952, Fossil Mammals from the Beginning of the Cenozoic in Brazil, Condylarthra, Litopterna, Xenungulata, and Astrapotheres: Bulletin of the American Museum of Natural History, v. 99, 355-394. What’s it about? This paper is a listing, with descriptions, of most of the Paleocene mammals of Brazil at the time of its writing (1952).Continue reading “Paleocene Mammals from Brazil – #365papers – 2018 – 67”

Why is Irritator so Irritating? – #365papers – 2018 – 66

Martill, Cruickshank, Frey, Small, and Clarke, 1996, A new crested maniraptoran dinosaur from the Santana Formation (Lower Cretaceous) of Brazil: Journal of the Geological Society, London, v. 153, p. 5-8. What’s it about? This paper is the description of a new species (and Genus and Family) of dinosaur, grouped with the tetanuran theropods, a subgroupContinue reading “Why is Irritator so Irritating? – #365papers – 2018 – 66”

A Lost Titan – #365papers – 2018 – 65

Kellner and Azevedo, 1999, A new sauropod dinosaur (Titanosauria) the the Late Cretaceous of Brazil, in Tomida, Rich, and Vickers-Rich, eds., Proceedings of the Second Gondwanan Dinosaur Symposium: National Science Museum Monographs, no. 15, p. 111-142. What’s it about? This paper is a detailed description of Gondwanatitan foustoi, a new species of titanosaur (a sauropod)Continue reading “A Lost Titan – #365papers – 2018 – 65”

The Dinosaurs of the Santana Formation, Brazil – #365papers – 2018 – 64

Naish, Martill, and Frey, 2004, Ecology, systematics and biogeographical relationships of dinosaurs, including a new theropod, from the Santana Formation (?Albian, Early Cretaceous) of Brazil: Historical Biology, v. 16, p. 1-14. What’s it about? The Santana Formation of the Araripe Basin of northeastern Brazil has yielded many important fossils, including some dinosaurs. Notably, Santanaraptor, describedContinue reading “The Dinosaurs of the Santana Formation, Brazil – #365papers – 2018 – 64”

On Fossil Eggshells – #365papers – 2018 – 63

Montanari, 2018, Cracking the egg: the use of modern and fossil eggs for ecological, environmental and biological interpretation: Royal Society Open Science, v. 5, 180006. What’s it about? Most people think of bones or shells as the most important mineralized remains of fossil animals. Vertebrates, particularly land-dwelling vertebrates, produce a third important (though often overlooked)Continue reading “On Fossil Eggshells – #365papers – 2018 – 63”

Infrared Light and the Quality of Fossil Preservation – #365papers – 2018 – 62

Beasley, Bartelink, Taylor, and Miller, 2014, Comparison of transmission FTIR, ATR, and DRIFT spectra: implications for assessment of bone bioapatite diagenesis: Journal of ARchaeological Science, v. 46, p. 16-22. What’s it about? One of the challenges of studying the chemistry of fossil bones and teeth is being confident that the chemistry of the fossils isContinue reading “Infrared Light and the Quality of Fossil Preservation – #365papers – 2018 – 62”

Long Distance Prospecting – #365papers – 2018 – 61

Conroy, Emerson, Anemone, and Townsend, 2012, Let your fingers do the walking: A simple spectral signature model for “remote” fossil prospecting: Journal of Human Evolution, v. 63, p. 79-84. What’s it about? The authors demonstrate the utility of satellite imagery combined with surface observations and GIS software to make predictions about where fossil localities mayContinue reading “Long Distance Prospecting – #365papers – 2018 – 61”

When Two Species Merge into One – #365papers – 2018 – 60

Kearns, Restani, Szabo, Schoder-Nielsen, Kim, Richardson, Marzluff, Fleisher, Johnsen, and Omland, 2018, Genomic evidence of speciation reversals in ravens: Nature Communications, v. 9, 906 What’s it about? The authors describe how what were once two distinct lineages of ravens (the Californian and the holarctic) have merged into what we now refer to as the commonContinue reading “When Two Species Merge into One – #365papers – 2018 – 60”

Bringing Up Baby (Mountains) in Western North America – #365papers – 2018 – 59

Yonkee and Weil, 2015, Tectonic evolution of the Sevier and Laramide belts within the North American Cordillera orogenic system: Earth-Science Reviews: v. 150, p. 531-593 What’s it about? This paper is a wonderful, yet highly technical, summary of the tectonic events leading to the Rocky Mountains as we know them today.

Pharyngeal Denticles and the Placoderms – #365papers – 2018 – 58

Johanson and Smith, 2005, Origin and evolution of gnathostome dentitions: a question of teeth and pharyngeal denticles in placoderms: Biological Reviews, v. 80, p. 303-345 What’s it about? This paper presents a detailed discussion of tooth development in fishes. In particular, the authors review the state of knowledge of tooth development in placoderms, among theContinue reading “Pharyngeal Denticles and the Placoderms – #365papers – 2018 – 58”