Results 51 to 60 of about 31,568 (232)

Mineralized area of the human rib cross‐sections from early puberty until adulthood

The Anatomical Record, EarlyView.
Abstract Ribs undergo numerous changes during growth and development. Although they occur both externally and internally, the latter are not as extensively documented during the transition from puberty to adulthood. Therefore, it is unknown how rib cross‐sectional mineralized area changes during this period.
J. M. López‐Rey, D. M. Doe, O. Cambra‐Moo, A. González Martín, D. García‐Martínez   +4 more
wiley   +1 more source

Ecological succession of a Jurassic shallow-water ichthyosaur fall. [PDF]

, 2014
After the discovery of whale fall communities in modern oceans, it has been hypothesized that during the Mesozoic the carcasses of marine reptiles created similar habitats supporting long-lived and specialized animal communities.
A Glover, A Kaim, A Kaim, A Kaim, A Sheldon, C Bristow, C Clausen, C Gaillard, C Smith, C Smith, CE Braby, CR Smith, DL Distel, DM Martill, DM Martill, DM Martill, F Garcia-Pichel, F Garcia-Pichel, G Bianucci, H Astibia, HS Chafetz, J Taylor, JA Hogler, JA Hogler, JA Massare, JW Deming, K Amano, K Duff, K Olu-Le Roy, L Lundsten, LA Levin, M Hrs-Brenko, ME Jans, ME Williams, P Dando, PA Allison, PB Wignall, PD Taylor, R Bromley, R Motani, R Motani, R Riding, R Twitchett, R Vrijenhoek, RC Vrijenhoek, RS Shapiro, S Danise, S Danise, S Danise, S Danise, S Dominici, S Golubic, S Kiel, S Kiel, S Kiel, T Treude, V De Buffrenil, V Thiel, Z Lewy   +58 more
core   +3 more sources

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

The Anatomical Record, EarlyView.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman, Rodrigo Tinoco Figueroa, Robert R. Higgins, Stephanie E. Pierce, Michael I. Coates, Emily M. Troyer, Vincent Fernandez, Kathleen Dollman, Jing Lu, Min Zhu, Matt Friedman, Sam Giles   +11 more
wiley   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

Investigating Variation in the Prevalence of Weathering in Faunal Assemblages in the UK: A Multivariate Statistical Approach [PDF]

, 2012
This article presents an exploratory multivariate statistical approach to gaining a more comprehensive understanding of variation in subaerial bone weathering in a British context.
Andrews, Bar-Oz, Behrensmeyer, Behrensmeyer, Behrensmmeyer, Binford, Boaz, Butler, Carlson, Chanesta, Collins, Conard, Currey, Currey, Dirrigl, Elkin, Endt, Enloe, Fernández-Jalvo, Fisher, Frison, Galloway, Gifford, Gifford-Gonzales, Hedges, Hedges, Henderson, Hill, Ioannidou, Kinnear, Kooyman, Kreutzer, Lam, Lam, Lam, Lam, Lam, Lambert, Lyman, Lyman, Lyman, Lyman, Maat, Madgwick, Madgwick, Millard, Munson, Munson, Murphy, Nicholson, Outram, Pavao, Pinto Llona, Potts, Potts, Purdy, Randall, Riclefs, Ross, Russell, Saunders, Serjeantson, Serjeantson, Smith, Steele, Stiner, Symmons, Symmons, Tappen, Tappen, Todisco, Trueman, Willey, Wood   +73 more
core   +1 more source

Stable isotopes and predation marks shed new light on ammonoid habitat depth preferences

Scientific Reports, 2021
Ammonoids are extinct cephalopods with external shells which predominated in many late Paleozoic and Mesozoic marine ecosystems. Stable isotope data from ammonoid shells constitute primary tools for understanding their palaeohabitats.
Marcin Machalski, Krzysztof Owocki, Zofia Dubicka, Oksana Malchyk, Weronika Wierny   +4 more
doaj   +1 more source

Introduction: New Discoveries and Theoretical Implications for the Last Foraging and First Farming in East Asia

Quaternary, 2021
Worldwide, scientific understanding about domestication and the origins of food production is undergoing rapid change based on new data from discoveries in paleoclimates and environments, paleobiology, and archaeology [...]
Pei-Lin Yu, Kazunobu Ikeya, Meng Zhang
doaj   +1 more source

Single‐cell sequencing reveals potential novel insights into appendage‐patterning and joint‐development in a spider

Developmental Dynamics, EarlyView.
Abstract Background Jointed appendages represent one of the key innovations of arthropods, and thus understanding the development and evolution of these structures is important for the understanding of the evolutionary success of Arthropoda. In this paper, we analyze a cell cluster that was identified in a previous single‐cell sequencing (SCS ...
Brenda I. Medina‐Jiménez, Graham E. Budd, Ralf Janssen   +2 more
wiley   +1 more source

Power, competition, and the nature of history [PDF]

, 2019
Historians have debated whether pathways and events from the past to the present are influenced largely by contingency, the dependence of outcomes on particular prior conditions, or whether there is long-term emergent directional change.
Vermeij, Geerat J
core   +1 more source

The fossil record of early tetrapods: worker effort and the end-Permian mass extinction [PDF]

, 2010
It is important to understand the quality of the fossil record of early tetrapods (Tetrapoda, minus Lissamphibia and Amniota) because of their key role in the transition of vertebrates from water to land, their dominance of terrestrial faunas for over ...
Bebber D.F., Benton M.J., Benton M.J., Benton M.J., Emma L. Bernard, Fara E., Fara E., Flessa K.W., Jaeger G.F., James E. Tarver, Marcello Ruta, Maxwell W.D., Michael J. Benton, Peters S.E., Raup D.M., Schoch R.R., Sepkoski J.J., Valentine J.W., Wickström L.M.   +18 more
core   +2 more sources