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Fossil Microbodies Are Melanosomes: Evaluating and Rejecting the "Fossilized Decay-Associated Microbes" Hypothesis

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

Melanosomes are membrane-bound organelles of varying geometry, commonly found within a range of vertebrate tissues, that contain the pigment melanin. ......

Functional Morphology of the Oviraptorosaurian and Scansoriopterygid Skull

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

Oviraptorosauria and Scansoriopterygidae are theropod clades that include members suggested to have partially or fully herbivorous diets. Obligate her......

The Biogeography of Coelurosaurian Theropods and Its Impact on Their Evolutionary History

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

The Coelurosauria are a group of mostly feathered theropods that gave rise to birds, the only dinosaurians that survived the Cretaceous-Paleogene exti......

Laser-Stimulated Fluorescence Refines Flight Modeling of the Early Cretaceous Bird Sapeornis

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

Unseen and difficult-to-see soft tissues of fossil birds revealed by laser-stimulated fluorescence (LSF) shed light on their functional morphology. He......

High Flyer or High Fashion? A Comparison of Flight Potential among Small-Bodied Paravians

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

The origin of flight in birds and its relationship to bird origins itself has achieved something of a renaissance in recent years, driven by the disco......

Methods of Studying Early Theropod Flight

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

The study of early theropod flight involves avialans as well as other pennaraptorans. It requires the study of anatomy that is familiar to the modern ......

The Fossil Record of Mesozoic and Paleocene Pennaraptorans

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

An unabated surge of new and important discoveries continues to transform knowledge of pen-naraptoran biology and evolution amassed over the last 150+......

SECTION 1. SYSTEMATICS, FOSSIL RECORD, AND BIOGEOGRAPHY

期刊: BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY, 2020; (440)

New and important pennaraptoran specimens continue to be discovered on a regular basis. Yet, with these discoveries the number of viable phylogenetic ......

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