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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. -
Invertebrate Ichnofossils from the Adamantina Formation (Bauru Basin, Late Cretaceous), Brazil
Rev. bras. paleontol. 9(2):211-220, Maio/Agosto 2006 © 2006 by the Sociedade Brasileira de Paleontologia INVERTEBRATE ICHNOFOSSILS FROM THE ADAMANTINA FORMATION (BAURU BASIN, LATE CRETACEOUS), BRAZIL ANTONIO CARLOS SEQUEIRA FERNANDES Departamento de Geologia e Paleontologia, Museu Nacional, UFRJ, Quinta da Boa Vista, São Cristóvão, 20940-040, Rio de Janeiro, RJ, Brazil. [email protected] ISMAR DE SOUZA CARVALHO Departamento de Geologia, Instituto de Geociências, UFRJ, 21949-900, Cidade Universitária, Rio de Janeiro, RJ, Brazil. [email protected] ABSTRACT – The Bauru Group is a sequence at least 300 m in thickness, of Cretaceous age (Turonian- Maastrichtian), located in southeastern Brazil (Bauru Basin), and consists of three formations, namely Adamantina, Uberaba and Marília. Throughout the Upper Cretaceous, there was an alternation between severely hot dry and rainy seasons, and a diverse fauna and flora was established in the basin. The ichnofossils studied were found in the Adamantina Formation outcrops and were identified as Arenicolites isp., ?Macanopsis isp., Palaeophycus heberti and Taenidium barretti, which reveal the burrowing behavior of the endobenthic invertebrates. There are also other biogenic structures such as plant root traces, coprolites and vertebrate fossil egg nests. The Adamantina Formation (Turonian-Santonian) is a sequence of fine sandstones, mudstones, siltstones and muddy sandstones, whose sediments are interpreted as deposited in exposed channel-bars and floodplains associated areas of braided fluvial environments. Key words: Bauru Basin, ichnofossils, late Cretaceous, continental palaeoenvironments, Adamantina Formation. RESUMO – O Grupo Bauru é uma seqüência de pelo menos 300 m de espessura, de idade cretácica (Turoniano- Maastrichtiano), localizada no Sudeste do Brasil (bacia Bauru), e consiste das formações Adamantina, Uberaba e Marília. -
Comments on the GSSP for the Basal Emsian Stage Boundary: the Need for Its Redefinition
Comments on the GSSP for the basal Emsian stage boundary: the need for its redefinition PETER CARLS, LADISLAV SLAVÍK & JOSÉ I. VALENZUELA-RÍOS The redefinition of the lower boundary of a traditional stage by means of a GSSP must be adapted as closely as practica- ble to the traditional boundary level because divergence between the original sense of the stage concept and name and the new GSSP creates confusing nomenclature. The present GSSP for the lower boundary of the Emsian Stage in the Zinzilban section (Kitab Reserve, SE Uzbekistan) is too low in the section to fulfill this requirement. Accordingly, a re- definition of the boundary of the lower Emsian by the International Subcommission on Devonian Stratigraphy (SDS) and the IUGS Commission on Stratigraphy is necessary. A new GSSP must be defined at a higher level and this could be done in strata of the present stratotype area. The stratigraphic correlation of the traditional Lower Emsian boundary and the GSSP is based on Mauro-Ibero-Armorican and Rheno-Ardennan benthic and pelagic faunas. • Key words: Pragian-Emsian GSSP, Inter-regional correlation, biostratigraphy, GSSP redefinition. CARLS, P., SLAVÍK,L.&VALENZUELA-RÍOS, J.I. 2008. Comments on the GSSP for the basal Emsian stage boundary: the need for its redefinition. Bulletin of Geosciences 83(4), 383–390 (1 figure). Czech Geological Survey, Prague. ISSN 1214-1119. Manuscript received July 3, 2008; accepted in revised form October 8, 2008; issued December 31, 2008. Peter Carls, Institut für Umweltgeologie, Technische Universität Braunschweig, Pockelsstrasse 3, D-38023 Braunschweig, Germany • Ladislav Slavík (corresponding author), Institute of Geology AS CR, v.v.i., Rozvojová 269, CZ-16502 Praha, Czech Republic; [email protected] • José Ignacio Valenzuela-Ríos, Department of Geology, Univer- sity of València, C/. -
Lower Devonian (Emsian) Rugose Corals from the Cantabrian Mountains, Northern Spain
Lower Devonian (Emsian) rugose corals from the Cantabrian Mountains, northern Spain STEFAN SCHRÖDER and FRANCISCO SOTO Schröder, S. and Soto, F. 2003. Lower Devonian (Emsian) rugose corals from the Cantabrian Mountains, northern Spain. Acta Palaeontologica Polonica 48 (4): 547–558. Two species of Lower Devonian rugose corals are described from the Cantabrian Mountains of Spain: Cantabriastraea cantabrica gen. et sp. nov. and Tabulophyllum bonarense sp. nov. The development of root− or buffer−like attachment structures (“rhizoid processes”) in T. bonarense indicates adaption to the soft substrate and supports corallite stabilisa− tion. Because of their strongly everted calices and a corresponding arrangement of trabeculae, the colonies of the genus Cantabriastraea are assigned tentatively to the Paradisphyllinae, constituting the first record of the subfamily in Western Europe. Some specimens give information on colony−formation of this taxon, which is induced by strong lateral budding (nonparricidal increase) of a remarkable large and long−lasting protocorallite. Key words: Rugosa, Cantabriastraea, Tabulophyllum, Devonian, Emsian, Cantabrian Mountains, ecology. Stefan Schröder [[email protected]], Geologisches Institut, Zülpicher Strasse 49A, D−50674 Köln, Germany; Francisco Soto [[email protected]],Departamento de Geologia,Universidad de Oviedo,c/ Arias de Velasco s/n, E−33005 Oviedo, Spain. Introduction Sedimentological investigations by Truyols et al. (1984), Keller (1988) and Vera de la Puente (1989) suggested that During the last 150 years a wide range of Palaeozoic fossils the lower part of the La Vid Group (Felmin Formation) cor− has been described from the Cantabrian Mountains and with responds to a supra−tidal environment, while the upper part regard to Devonian faunas the so−called “Sabero−fossils” are (La Pedrosa and Coladilla Formations) was deposited in a especially famous. -
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DOI 10.5935/0100-929X.20120007 Revista do Instituto Geológico, São Paulo, 33 (2), 13-29, 2012 DESCRIÇÃO DE UM ESPÉCIME JUVENIL DE BAURUSUCHIDAE (CROCODYLIFORMES: MESOEUCROCODYLIA) DO GRUPO BAURU (NEOCRETÁCEO): CONSIDERAÇÕES PRELIMINARES SOBRE ONTOGENIA Caio Fabricio Cezar GEROTO Reinaldo José BERTINI RESUMO Entre os táxons de Crocodyliformes do Grupo Bauru (Neocretáceo), grande quan- tidade de morfótipos, incluindo materiais cranianos e pós-cranianos, vem sendo des- crita em associação a Baurusuchus pachecoi. Porém, a falta de estudos ontogenéticos, como os realizados para Mariliasuchus amarali, levou à atribuição de novos gêneros e espécies aos poucos crânios completos encontrados. A presente contribuição traz a descrição de um espécime juvenil de Baurusuchidae depositado no acervo do Museu de Ciências da Terra no Rio de Janeiro sob o número MCT 1724 - R. Trata-se de um rostro e mandíbula associados e em oclusão, com o lado esquerdo melhor preservado que o direito, e dentição zifodonte extremamente reduzida. O fóssil possui 125,3 mm de comprimento preservado da porção anterior do pré-maxilar até a extremidade pos- terior do dentário; 117,5 mm de comprimento preservado do pré-maxilar aos palatinos e altura lateral de 51,4 mm. Entre as informações de caráter ontogenético identificadas destacam-se: ornamentação suave composta de estrias vermiformes muito espaçadas e largas, linha ventral do maxilar mais reta, dentário levemente inclinado dorsalmente na porção mediana e sínfise mandibular menos vertical que em outros baurussúqui- dos de tamanho maior. A maioria das características rostrais e dentárias, diagnósticas para Baurusuchus pachecoi, foi identificada no exemplar MCT 1724 - R: rostro alto e comprimido lateralmente, além de dentição zifodonte com forte redução dentária, que culmina em quatro dentes pré-maxilares e cinco maxilares. -
Upper Cretaceous), Brazil
Rev. Mus. Argentino Cienc. Nat., n.s. 7(1): 31-36, 2005 Buenos Aires, ISSN 1514-5158 Maniraptoran theropod ungual from the Marília Formation (Upper Cretaceous), Brazil Fernando E. NOVAS1, Luiz Carlos BORGES RIBEIRO2,3 & Ismar de SOUZA CARVALHO4 1CONICET - Museo Argentino de Ciencias Naturales «Bernardino Rivadavia», Av. Angel Gallardo 470, Buenos Aires (1405), Argentina, E-mail: [email protected]. 2Fundação Municipal de Ensino Superior de Uberaba- FUMESU/Centro de Pesquisas Paleontológicas L. I. Price. Av. Randolfo Borges Jr., n° 1.250. Universidade, 38.066-005, Uberaba- MG, Brazil, E-mail: [email protected]. 3Universidade de Uberaba-UNIUBE/Instituto de Formação de Educadores-Departamento de Biologia, Av. Nenê Sabino, n° 1.801. Universitário, Uberaba-MG, 38.055-500, Brazil, E-mail: [email protected]. 4Universidade Federal do Rio de Janeiro, Departamento de Geologia, CCMN/IGEO. 21.949-900 Cidade Universitária-Ilha do Fundão, Rio de Janeiro-RJ, Brazil, E-mail: [email protected] Abstract: A new theropod record from the Marília Formation (Late Cretaceous, Minas Gerais, Brazil) is here described. It consists of an isolated manual ungual which exhibits derived maniraptoran features (e.g., presence of proximodorsal lip). The ungual distinguishes by a set of unique features (e.g., dorsoventrally low and proximodistally elongate profile in side view; block-like flexor tuberosity; proximal articular surface more dorsally oriented than in other theropods; cutting «keel» located distally on ventral surface) suggesting that the animal that produced it was a member of an unknown group of derived maniraptoran theropods, other than alvarezsaurids, deinonychosaurians and oviraptorosaurians already recorded in South America. -
Evaluating the Frasnian-Famennian Mass Extinction: Comparing Brachiopod Faunas
Evaluating the Frasnian-Famennian mass extinction: Comparing brachiopod faunas PAUL COPPER Copper, P. 1998. Evaluating the Frasnian-Famennian mass extinction: Comparing bra- chiopod faunas.- Acta Palaeontologica Polonica 43,2,137-154. The Frasnian-Famennian (F-F) mass extinctions saw the global loss of all genera belonging to the tropically confined order Atrypida (and Pentamerida): though Famen- nian forms have been reported in the literafure, none can be confirmed. Losses were more severe during the Givetian (including the extinction of the suborder Davidsoniidina, and the reduction of the suborder Lissatrypidina to a single genus),but ońgination rates in the remaining suborder surviving into the Frasnian kept the group alive, though much reduced in biodiversity from the late Earb and Middle Devonian. In the terminal phases of the late Palmatolepis rhenana and P linguifurmis zones at the end of the Frasnian, during which the last few Atrypidae dechned, no new genera originated, and thus the Atrypida were extĘated. There is no evidence for an abrupt termination of all lineages at the F-F boundary, nor that the Atrypida were abundant at this time, since all groups were in decline and impoverished. Atypida were well established in dysaerobic, muddy substrate, reef lagoonal and off-reef deeper water settings in the late Givetian and Frasnian, alongside a range of brachiopod orders which sailed through the F-F boundary: tropical shelf anoxia or hypońa seems implausible as a cause for aĘpid extinction. Glacial-interglacial climate cycles recorded in South Ameńca for the Late Devonian, and their synchronous global cooling effect in low latitudes, as well as loss of the reef habitat and shelf area reduction, remain as the most likely combined scenarios for the mass extinction events. -
The Baurusuchidae Vs Theropoda Record in the Bauru Group (Upper Cretaceous, Brazil): a Taphonomic Perspective
Journal of Iberian Geology https://doi.org/10.1007/s41513-018-0048-4 RESEARCH PAPER The Baurusuchidae vs Theropoda record in the Bauru Group (Upper Cretaceous, Brazil): a taphonomic perspective Kamila L. N. Bandeira1 · Arthur S. Brum1 · Rodrigo V. Pêgas1 · Giovanne M. Cidade2 · Borja Holgado1 · André Cidade1 · Rafael Gomes de Souza1 Received: 31 July 2017 / Accepted: 23 January 2018 © Springer International Publishing AG, part of Springer Nature 2018 Abstract Purpose The Bauru Group is worldwide known due to its high diversity of archosaurs, especially that of Crocodyliformes. Recently, it has been suggested that the Crocodyliformes, especially the Baurusuchidae, were the top predators of the Bauru Group, based on their anatomical convergence with theropods and the dearth of those last ones in the fossil record of this geological group. Methods Here, we erect the hypothesis that assumption is taphonomically biased. For this purpose, we made a literature survey on all the published specimens of Theropoda, Baurusuchidae and Titanosauria from all geological units from the Bauru Group. Also, we gathered data from the available literature, and we classifed each fossil fnd under a taphonomic class proposed on this work. Results We show that those groups have diferent degrees of bone representativeness and diferent qualities of preservation pattern. Also, we suggest that baurusuchids lived close to or in the abundant food plains, which explains the good preserva- tion of their remains. Theropods and titanosaurs did not live in association with such environments and the quality of their preservation has thus been negatively afected. Conclusions We support the idea that the Baurusuchidae played an important role in the food chain of the ecological niches of the Late Cretaceous Bauru Group, but the possible biases in their fossil record relative to Theropoda do not support the conclusion that baurusuchids outcompeted theropods. -
On the Paleontology of Animal Cognition: Using the Brain Dimensions of Modern Birds to Characterize Maniraptor Cognition
12 Journal of Advanced Neuroscience Research, Special Issue, May-2017, 12-19 On the Paleontology of Animal Cognition: Using the Brain Dimensions of Modern Birds to Characterize Maniraptor Cognition Thomas M. Gaetano1, Margaret M. Yacobucci1 and Verner P. Bingman2,* 1Department of Geology, Bowling Green State University, Ohio, USA 2Department of Psychology and J.P. Scott Center for Neuroscience, Mind and Behavior, Bowling Green State University, Ohio, USA Abstract: Drawing inferences on the characteristics, including behavior, of extinct species using comparisons with extant species has a long tradition in paleontology. Departing from the observation that extinct maniraptors possessed brains with a relatively long and narrow telencephalon, we used digital endocasts taken from 11 species of modern birds to determine if any of the sampled modern bird species displayed a similar telencephalic shape, and by inference, similar cognitive ability. The analysis revealed that the telencephalon of the double-crested cormorant (Phalacrocorax auritus) is extraordinarily narrow (large length-to-width ratio) and strikingly similar to Archaeopteryx and even some non-avian, maniraptoran dinosaurs. The relatively narrow brain in turn suggests a relatively small nidopallium subdivision of the telencephalon and associated impoverished general cognitive ability. This first-order brain-anatomical observation, together with the relatively ancient origins of a cormorant fossil record, suggest that cormorants could be used as a model for the general cognitive abilities of extinct maniraptors. Keywords: Brain endocasts, Comparative cognition, Double-crested cormorant, Hippocampus, Nidopallium, Paleoneurology. INTRODUCTION animal cognition, observations and experimental evidence from birds have also offered some extraordi- Considerations of the richness of animal cognitive nary examples of cognition [3]. -
Homo Erectus: a Bigger, Faster, Smarter, Longer Lasting Hominin Lineage
Homo erectus: A Bigger, Faster, Smarter, Longer Lasting Hominin Lineage Charles J. Vella, PhD August, 2019 Acknowledgements Many drawings by Kathryn Cruz-Uribe in Human Career, by R. Klein Many graphics from multiple journal articles (i.e. Nature, Science, PNAS) Ray Troll • Hominin evolution from 3.0 to 1.5 Ma. (Species) • Currently known species temporal ranges for Pa, Paranthropus aethiopicus; Pb, P. boisei; Pr, P. robustus; A afr, Australopithecus africanus; Ag, A. garhi; As, A. sediba; H sp., early Homo >2.1 million years ago (Ma); 1470 group and 1813 group representing a new interpretation of the traditionally recognized H. habilis and H. rudolfensis; and He, H. erectus. He (D) indicates H. erectus from Dmanisi. • (Behavior) Icons indicate from the bottom the • first appearance of stone tools (the Oldowan technology) at ~2.6 Ma, • the dispersal of Homo to Eurasia at ~1.85 Ma, • and the appearance of the Acheulean technology at ~1.76 Ma. • The number of contemporaneous hominin taxa during this period reflects different Susan C. Antón, Richard Potts, Leslie C. Aiello, 2014 strategies of adaptation to habitat variability. Origins of Homo: Summary of shifts in Homo Early Homo appears in the record by 2.3 Ma. By 2.0 Ma at least two facial morphs of early Homo (1813 group and 1470 group) representing two different adaptations are present. And possibly 3 others as well (Ledi-Geraru, Uraha-501, KNM-ER 62000) The 1813 group survives until at least 1.44 Ma. Early Homo erectus represents a third more derived morph and one that is of slightly larger brain and body size but somewhat smaller tooth size. -
1000002291104.Pdf
Quaternary International 211 (2010) 4–13 Contents lists available at ScienceDirect Quaternary International journal homepage: www.elsevier.com/locate/quaint Morphological and morphometric analysis of variation in the Zhoukoudian Homo erectus brain endocasts Xiujie Wu a,b,*, Lynne A. Schepartz c, Christopher J. Norton d a Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Xizhimenwaidajie 142, Box 643, Beijing 100044, China b State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Nanjing 210008, China c Department of Anthropology, Florida State University, Tallahassee, FL 32306-7772, USA d Department of Anthropology, University of Hawaii at Manoa, Honolulu, HI 96822-2223, USA article info abstract Article history: The six Zhoukoudian (ZKD) Locality 1 Homo erectus specimens derive from stratigraphic levels 11–3 with Available online 19 July 2009 a geochronological span of approximately 0.3 Ma. This paper introduces the history of the ZKD endocasts and presents data on their morphological features and linear dimensions in order to evaluate variability in the sample over time and in the broader context of human brain evolution using a comparative sample of African and other Asian H. erectus fossils and modern Chinese males. The ZKD brains are very similar in their morphological characteristics, but there are also significant but subtle changes involving expansion of the frontal and occipital lobe breadths that correlate with the geochronology. The same is not true for general endocranial volume. The ZKD brains, together with other Asian and African H. erectus specimens, have low height dimensions and short parietal chords that distinguish them from the modern Chinese. -
Ontogenetic and Adult Shape Variation in the Endocast of Tapirus: Implications for T
East Tennessee State University Digital Commons @ East Tennessee State University Electronic Theses and Dissertations Student Works 5-2020 Ontogenetic and Adult Shape Variation in the Endocast of Tapirus: Implications for T. polkensis from the Gray Fossil Site Thomas M. Gaetano East Tennessee State University Follow this and additional works at: https://dc.etsu.edu/etd Part of the Other Neuroscience and Neurobiology Commons, Paleobiology Commons, Paleontology Commons, and the Zoology Commons Recommended Citation Gaetano, Thomas M., "Ontogenetic and Adult Shape Variation in the Endocast of Tapirus: Implications for T. polkensis from the Gray Fossil Site" (2020). Electronic Theses and Dissertations. Paper 3765. https://dc.etsu.edu/etd/3765 This Thesis - unrestricted is brought to you for free and open access by the Student Works at Digital Commons @ East Tennessee State University. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of Digital Commons @ East Tennessee State University. For more information, please contact [email protected]. Ontogenetic and Adult Shape Variation in the Endocast of Tapirus: Implications for T. polkensis from the Gray Fossil Site ________________________________ A thesis presented to the faculty of the Department of Geosciences East Tennessee State University In partial fulfillment of the requirements for the degree Masters of Science in Geosciences _________________________________ by Thomas M. Gaetano May 2020 _________________________________ Dr. Steven C. Wallace, Chair Dr. Christopher C. Widga Dr. Richard T. Carter Dr. Thomas C. Jones Keywords: Endocast, Paleoneurology, Tapir, Gray Fossil Site, Telencephalon, Sociality, Paleoecology, Sensory Ecology ABSTRACT Ontogenetic and Adult Shape Variation in the Endocast of Tapirus: Implications for T.