Newsletter - Nº 22, October 2008
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Beyond Endocasts: Using Predicted Brain-Structure Volumes of Extinct Birds to Assess Neuroanatomical and Behavioral Inferences
diversity Article Beyond Endocasts: Using Predicted Brain-Structure Volumes of Extinct Birds to Assess Neuroanatomical and Behavioral Inferences 1, , 2 2 Catherine M. Early * y , Ryan C. Ridgely and Lawrence M. Witmer 1 Department of Biological Sciences, Ohio University, Athens, OH 45701, USA 2 Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA; [email protected] (R.C.R.); [email protected] (L.M.W.) * Correspondence: [email protected] Current Address: Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA. y Received: 1 November 2019; Accepted: 30 December 2019; Published: 17 January 2020 Abstract: The shape of the brain influences skull morphology in birds, and both traits are driven by phylogenetic and functional constraints. Studies on avian cranial and neuroanatomical evolution are strengthened by data on extinct birds, but complete, 3D-preserved vertebrate brains are not known from the fossil record, so brain endocasts often serve as proxies. Recent work on extant birds shows that the Wulst and optic lobe faithfully represent the size of their underlying brain structures, both of which are involved in avian visual pathways. The endocasts of seven extinct birds were generated from microCT scans of their skulls to add to an existing sample of endocasts of extant birds, and the surface areas of their Wulsts and optic lobes were measured. A phylogenetic prediction method based on Bayesian inference was used to calculate the volumes of the brain structures of these extinct birds based on the surface areas of their overlying endocast structures. This analysis resulted in hyperpallium volumes of five of these extinct birds and optic tectum volumes of all seven extinct birds. -
Constraints on the Timescale of Animal Evolutionary History
Palaeontologia Electronica palaeo-electronica.org Constraints on the timescale of animal evolutionary history Michael J. Benton, Philip C.J. Donoghue, Robert J. Asher, Matt Friedman, Thomas J. Near, and Jakob Vinther ABSTRACT Dating the tree of life is a core endeavor in evolutionary biology. Rates of evolution are fundamental to nearly every evolutionary model and process. Rates need dates. There is much debate on the most appropriate and reasonable ways in which to date the tree of life, and recent work has highlighted some confusions and complexities that can be avoided. Whether phylogenetic trees are dated after they have been estab- lished, or as part of the process of tree finding, practitioners need to know which cali- brations to use. We emphasize the importance of identifying crown (not stem) fossils, levels of confidence in their attribution to the crown, current chronostratigraphic preci- sion, the primacy of the host geological formation and asymmetric confidence intervals. Here we present calibrations for 88 key nodes across the phylogeny of animals, rang- ing from the root of Metazoa to the last common ancestor of Homo sapiens. Close attention to detail is constantly required: for example, the classic bird-mammal date (base of crown Amniota) has often been given as 310-315 Ma; the 2014 international time scale indicates a minimum age of 318 Ma. Michael J. Benton. School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, U.K. [email protected] Philip C.J. Donoghue. School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, U.K. [email protected] Robert J. -
Onetouch 4.0 Scanned Documents
/ Chapter 2 THE FOSSIL RECORD OF BIRDS Storrs L. Olson Department of Vertebrate Zoology National Museum of Natural History Smithsonian Institution Washington, DC. I. Introduction 80 II. Archaeopteryx 85 III. Early Cretaceous Birds 87 IV. Hesperornithiformes 89 V. Ichthyornithiformes 91 VI. Other Mesozojc Birds 92 VII. Paleognathous Birds 96 A. The Problem of the Origins of Paleognathous Birds 96 B. The Fossil Record of Paleognathous Birds 104 VIII. The "Basal" Land Bird Assemblage 107 A. Opisthocomidae 109 B. Musophagidae 109 C. Cuculidae HO D. Falconidae HI E. Sagittariidae 112 F. Accipitridae 112 G. Pandionidae 114 H. Galliformes 114 1. Family Incertae Sedis Turnicidae 119 J. Columbiformes 119 K. Psittaciforines 120 L. Family Incertae Sedis Zygodactylidae 121 IX. The "Higher" Land Bird Assemblage 122 A. Coliiformes 124 B. Coraciiformes (Including Trogonidae and Galbulae) 124 C. Strigiformes 129 D. Caprimulgiformes 132 E. Apodiformes 134 F. Family Incertae Sedis Trochilidae 135 G. Order Incertae Sedis Bucerotiformes (Including Upupae) 136 H. Piciformes 138 I. Passeriformes 139 X. The Water Bird Assemblage 141 A. Gruiformes 142 B. Family Incertae Sedis Ardeidae 165 79 Avian Biology, Vol. Vlll ISBN 0-12-249408-3 80 STORES L. OLSON C. Family Incertae Sedis Podicipedidae 168 D. Charadriiformes 169 E. Anseriformes 186 F. Ciconiiformes 188 G. Pelecaniformes 192 H. Procellariiformes 208 I. Gaviiformes 212 J. Sphenisciformes 217 XI. Conclusion 217 References 218 I. Introduction Avian paleontology has long been a poor stepsister to its mammalian counterpart, a fact that may be attributed in some measure to an insufRcien- cy of qualified workers and to the absence in birds of heterodont teeth, on which the greater proportion of the fossil record of mammals is founded. -
The Andean Condor: a Field Study ______
_____________________________________ THE ANDEAN CONDOR: A FIELD STUDY _____________________________________ By: Jerry McGahan Box 71 Arlee, MT 59821 (406) 726-3480 [email protected] JerryMcGahan.com With photographs, field, and clerical assistance by: Libby Sale Dedicated to the Memory of Carlos Lehmann V Maria Koepcke Enrique Avila William Millie i Table of Contents PREFACE AND ACKNOWLEDMENTS……………………………………………………… 1 1 THE STUDY .............................................................................................................................. 6 INTRODUCTION ............................................................................................................. 6 STUDY AREAS .............................................................................................................. 15 Colombia .............................................................................................................. 15 Cerro Illescas ....................................................................................................... 18 Paracas ................................................................................................................ 20 THE SUBJECT ................................................................................................................ 21 Taxonomy ............................................................................................................. 21 Description ........................................................................................................... 22 -
Evolution of Galliformes and Their Presence in the Carpathian Basin
Ornis Hungarica 2019. 27(2): 142–174. DOI: 10.2478/orhu-2019-0021 Evolution of Galliformes and their presence in the Carpathian Basin Jenő (Eugen) KESSLER Received: April 23, 2019 – Revised: May 13, 2019 – Accepted: May 15, 2019 Kessler, J. (E.) 2019. Evolution of Galliformes and their presence in the Carpathian Basin. – Or- nis Hungarica 27(2): 142–174. DOI: 10.2478/orhu-2019-0021 Abstract Due to the number of specimen, their size and weaker flight capabilities they are one of the favorite preys of furred and feathered carnivores. Due to this factor quite a number of skeletal fragments remained and fossilized over millions of years, especially in caves. Their presence in Europe can be traced back to the Eocene, but the majority of finds come from the Neogene and the Quaternary. In the Car- pathian Basin they are known since the beginning of the Neogene. The text is complemented with the bibliogra- phy concerning the fossilized material, one figure and six table. Keywords: Europe, Carpathian Basin, evolution, Galliformes, grouses Összefoglalás Egyedszámuk, méretük, életmódjuk, és gyengébb repülési képességük következtében kedvenc prédaállataik a tollas és szőrmés ragadozóknak. Az előbbieknek köszönhetően így elég sok vázrészük fennma- radt és fosszilizálódhatott az évmilliók folyamán, főleg a barlangi lelőhelyeken. Európai jelenlétüket már az eo- céntól követni lehet, de a leletek többsége a neogénből és a kvarterből származik. A Kárpát-medencéből a neo- gén elejétől ismertek. A szöveget kiegészíti a fosszilis anyagot felölelő irodalomjegyzék, egy ábra és hat táblázat. Kulcsszavak: Európa, Kárpát-medence, evolúció, tyúkfélék, fajdok Department of Paleontology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/c, Hungary, e-mail: [email protected] Introduction Their dimensions vary (sexual dimorphism is a usual characteristic), they are herbivores or omnivores. -
California Condor (Gymnogyps Californianus) 5-Year Review
California Condor (Gymnogyps californianus) 5-Year Review: Summary and Evaluation U.S. Fish and Wildlife Service Pacific Southwest Region June 2013 Acknowledgement: The Service gratefully acknowledges the commitment and efforts of the California Condor Recovery Program partners for their many on-going contributions towards condor recovery. Our partners were instrumental both in ensuring that we used the best available science to craft our analyses and recommendations in this 5-year review and in providing individual feedback that was used to refine this document. Photo Credit: Unless otherwise indicated, all photos, charts, and graphs are products of the U.S. Fish and Wildlife Service Page | 2 5-YEAR REVIEW California condor (Gymnogyps californianus) I. GENERAL INFORMATION Purpose of 5-Year Reviews: The U.S. Fish and Wildlife Service (Service) is required by section 4(c)(2) of the Endangered Species Act of 1973, as amended (Act) to conduct a status review of each listed species at least once every 5 years. The purpose of a 5-year review is to evaluate whether or not the species’ status has changed since it was listed (or since the most recent 5-year review). Based on the 5- year review, we recommend whether the species should be removed from the Lists of Endangered and Threatened Wildlife, changed in status from endangered to threatened, or changed in status from threatened to endangered. Our original listing as endangered or threatened is based on the species’ status considering the five threat factors described in section 4(a)(1) of the Act. These same five factors are considered in any subsequent reclassification or delisting decisions. -
Peer Review of the Scientific Findings in the U.S
SUMMARY REPORT Peer Review of the Scientific Findings in the U.S. Fish and Wildlife Service Eagle Fatality Model and its Application to Wind Energy Development Projects DIVISION OF MIGRATORY BIRDS REGION 6 OFFICE U.S. FISH AND WILDLIFE SERVICE March 14, 2013 Prepared for: U.S. Fish and Wildlife Service Region 6 Office Lake Plaza North 134 Union Boulevard Lakewood, Colorado 80228-1807 Prepared by: AMEC Environment & Infrastructure, Inc. 1819 Denver West Drive Suite 100 Golden, CO 80401 USFWS Order No. F13PB00058 AMEC Project No. 32106C001 TABLE OF CONTENTS Executive Summary .................................................................................................. 1 1.0 Background ........................................................................................................ 4 2.0 Peer Reviewer Approach ................................................................................... 5 2.1 Description of Individual Reviewer‟s Role ....................................................... 5 2.2 Model Development and Description .............................................................. 6 2.3 Thousand Turbine Project (TTP) .................................................................... 8 2.4 PWRC Power Turbine Model Methods and Outputs ...................................... 9 3.0 Summary of Peer Review Responses .............................................................. 9 3.1 General Model Review Questions ................................................................ 10 3.2 1000 Turbine Project Peer Review -
The Lost World of Fossil Lake
Snapshots from Deep Time THE LOST WORLD of FOSSIL LAKE lance grande With photography by Lance Grande and John Weinstein The University of Chicago Press | Chicago and London Ray-Finned Fishes ( Superclass Actinopterygii) The vast majority of fossils that have been mined from the FBM over the last century and a half have been fossil ray-finned fishes, or actinopterygians. Literally millions of complete fossil ray-finned fish skeletons have been excavated from the FBM, the majority of which have been recovered in the last 30 years because of a post- 1970s boom in the number of commercial fossil operations. Almost all vertebrate fossils in the FBM are actinopterygian fishes, with perhaps 1 out of 2,500 being a stingray and 1 out of every 5,000 to 10,000 being a tetrapod. Some actinopterygian groups are still poorly understood be- cause of their great diversity. One such group is the spiny-rayed suborder Percoidei with over 3,200 living species (including perch, bass, sunfishes, and thousands of other species with pointed spines in their fins). Until the living percoid species are better known, ac- curate classification of the FBM percoids (†Mioplosus, †Priscacara, †Hypsiprisca, and undescribed percoid genera) will be unsatisfac- tory. 107 Length measurements given here for actinopterygians were made from the tip of the snout to the very end of the tail fin (= total length). The FBM actinop- terygian fishes presented below are as follows: Paddlefishes (Order Acipenseriformes, Family Polyodontidae) Paddlefishes are relatively rare in the FBM, represented by the species †Cros- sopholis magnicaudatus (fig. 48). †Crossopholis has a very long snout region, or “paddle.” Living paddlefishes are sometimes called “spoonbills,” “spoonies,” or even “spoonbill catfish.” The last of those common names is misleading because paddlefishes are not closely related to catfishes and are instead close relatives of sturgeons. -
Parasitaemia Data and Molecular Characterization of Haemoproteus Catharti from New World Vultures (Cathartidae) Reveals a Novel Clade of Haemosporida Michael J
Yabsley et al. Malar J (2018) 17:12 https://doi.org/10.1186/s12936-017-2165-5 Malaria Journal RESEARCH Open Access Parasitaemia data and molecular characterization of Haemoproteus catharti from New World vultures (Cathartidae) reveals a novel clade of Haemosporida Michael J. Yabsley1,2* , Ralph E. T. Vanstreels3,4, Ellen S. Martinsen5,6, Alexandra G. Wickson1, Amanda E. Holland1,7, Sonia M. Hernandez1,2, Alec T. Thompson1, Susan L. Perkins8, Christopher J. West9, A. Lawrence Bryan7, Christopher A. Cleveland1,2, Emily Jolly1, Justin D. Brown10, Dave McRuer11, Shannon Behmke12 and James C. Beasley1,7 Abstract Background: New World vultures (Cathartiformes: Cathartidae) are obligate scavengers comprised of seven species in fve genera throughout the Americas. Of these, turkey vultures (Cathartes aura) and black vultures (Coragyps atratus) are the most widespread and, although ecologically similar, have evolved diferences in morphology, physiology, and behaviour. Three species of haemosporidians have been reported in New World vultures to date: Haemoproteus catharti, Leucocytozoon toddi and Plasmodium elongatum, although few studies have investigated haemosporidian parasites in this important group of species. In this study, morphological and molecular methods were used to investi- gate the epidemiology and molecular biology of haemosporidian parasites of New World vultures in North America. Methods: Blood and/or tissue samples were obtained from 162 turkey vultures and 95 black vultures in six states of the USA. Parasites were identifed based on their morphology in blood smears, and sequences of the mitochondrial cytochrome b and nuclear adenylosuccinate lyase genes were obtained for molecular characterization. Results: No parasites were detected in black vultures, whereas 24% of turkey vultures across all sampling locations were positive for H. -
Convergent Regulatory Evolution and the Origin of Flightlessness in Palaeognathous Birds
bioRxiv preprint doi: https://doi.org/10.1101/262584; this version posted February 8, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Convergent regulatory evolution and the origin of flightlessness in palaeognathous birds Timothy B. Sackton* (1,2), Phil Grayson (2,3), Alison Cloutier (2,3), Zhirui Hu (4), Jun S. Liu (4), Nicole E. Wheeler (5,6), Paul P. Gardner (5,7), Julia A. Clarke (8), Allan J. Baker (9,10), Michele Clamp (1), Scott V. Edwards* (2,3) Affiliations: 1) Informatics Group, Harvard University, Cambridge, USA 2) Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, USA 3) Museum of Comparative Zoology, Harvard University, Cambridge, USA 4) Department of Statistics, Harvard University, Cambridge, USA 5) School of Biological Sciences, University of Canterbury, New Zealand 6) Wellcome Sanger Institute, Wellcome Genome Campus, Cambridge, UK 7) Department of Biochemistry, University of Otago, New Zealand 8) Jackson School of Geosciences, The University of Texas at Austin, Austin, USA 9) Department of Natural History, Royal Ontario Museum, Toronto, Canada 10) Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada *correspondence to: TBS ([email protected]) or SVE ([email protected]) bioRxiv preprint doi: https://doi.org/10.1101/262584; this version posted February 8, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. The relative roles of regulatory and protein evolution in the origin and loss of convergent phenotypic traits is a core question in evolutionary biology. -
(Aves: Palaeognathae) from the Paleocene (Tiffanian) of Southern California
PaleoBios 31(1):1–7, May 13, 2014 A lithornithid (Aves: Palaeognathae) from the Paleocene (Tiffanian) of southern California THOMAS A. STIDHAM,1* DON LOFGREN,2 ANDREW A. FARKE,2 MICHAEL PAIK,3 and RACHEL CHOI3 1Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China; e-mail: [email protected], corresponding author. 2Raymond M. Alf Museum of Paleontology, Claremont, California 91711, USA. 3 The Webb Schools, Claremont, California 91711, USA The proximal end of a bird humerus recovered from the Paleocene Goler Formation of southern California is the oldest Cenozoic record of this clade from the west coast of North America. The fossil is characterized by a relatively large, dorsally-positioned head of the humerus and a subcircular opening to the pneumotricipital fossa, consistent with the Lithornithidae among known North American Paleocene birds, and is similar in size to Lithornis celetius. This specimen from the Tiffanian NALMA extends the known geographic range of lithornithids outside of the Rocky Mountains region in the United States. The inferred coastal depositional environment of the Goler Formation is consistent with a broad ecological niche of lithornithids. The age and geographic distribution of lithornithids in North America and Europe suggests these birds dispersed from North America to Europe in the Paleocene or by the early Eocene. During the Paleogene the intercontinental dispersal of lithornithids likely occurred alongside other known bird and mammalian movements that were facilitated by climatic and sea level changes. Keywords: bird humerus, fossil, Lithornithidae, Goler Formation, Tiffanian, California INTRODUCTION largely unknown in North America. -
A North American Stem Turaco, and the Complex Biogeographic History of Modern Birds Daniel J
Field and Hsiang BMC Evolutionary Biology (2018) 18:102 https://doi.org/10.1186/s12862-018-1212-3 RESEARCHARTICLE Open Access A North American stem turaco, and the complex biogeographic history of modern birds Daniel J. Field1,2* and Allison Y. Hsiang2,3 Abstract Background: Earth’s lower latitudes boast the majority of extant avian species-level and higher-order diversity, with many deeply diverging clades restricted to vestiges of Gondwana. However, palaeontological analyses reveal that many avian crown clades with restricted extant distributions had stem group relatives in very different parts of the world. Results: Our phylogenetic analyses support the enigmatic fossil bird Foro panarium Olson 1992 from the early Eocene (Wasatchian) of Wyoming as a stem turaco (Neornithes: Pan-Musophagidae), a clade that is presently endemic to sub-Saharan Africa. Our analyses offer the first well-supported evidence for a stem musophagid (and therefore a useful fossil calibration for avian molecular divergence analyses), and reveal surprising new information on the early morphology and biogeography of this clade. Total-clade Musophagidae is identified as a potential participant in dispersal via the recently proposed ‘North American Gateway’ during the Palaeogene, and new biogeographic analyses illustrate the importance of the fossil record in revealing the complex historical biogeography of crown birds across geological timescales. Conclusions: In the Palaeogene, total-clade Musophagidae was distributed well outside the range of crown Musophagidae in the present day. This observation is consistent with similar biogeographic observations for numerous other modern bird clades, illustrating shortcomings of historical biogeographic analyses that do not incorporate information from the avian fossil record.