Assuntos
Dinossauros , Óvulo , Paleontologia , Animais , Paleontologia/história , História do Século XXAssuntos
Ética em Pesquisa , Publicações Periódicas como Assunto/história , Publicações Periódicas como Assunto/normas , Pesquisa/história , Pesquisa/tendências , Animais , Aniversários e Eventos Especiais , Astronomia/história , Autoria , DNA/química , DNA/história , Ética em Pesquisa/história , Fósseis , Aquecimento Global/legislação & jurisprudência , Aquecimento Global/prevenção & controle , Aquecimento Global/estatística & dados numéricos , Processos Grupais , História do Século XIX , História do Século XX , História do Século XXI , Hominidae , Projeto Genoma Humano/história , Humanos , Cooperação Internacional , Ozônio/análise , Ozônio/história , Paleontologia/história , Revisão da Pesquisa por Pares , Publicações Periódicas como Assunto/tendências , Física/história , Reprodutibilidade dos Testes , Pesquisa/educação , Pesquisa/normasRESUMO
In this review, we describe some of the central philosophical issues facing origins-of-life research and provide a targeted history of the developments that have led to the multidisciplinary field of origins-of-life studies. We outline these issues and developments to guide researchers and students from all fields. With respect to philosophy, we provide brief summaries of debates with respect to (1) definitions (or theories) of life, what life is and how research should be conducted in the absence of an accepted theory of life, (2) the distinctions between synthetic, historical, and universal projects in origins-of-life studies, issues with strategies for inferring the origins of life, such as (3) the nature of the first living entities (the "bottom up" approach) and (4) how to infer the nature of the last universal common ancestor (the "top down" approach), and (5) the status of origins of life as a science. Each of these debates influences the others. Although there are clusters of researchers that agree on some answers to these issues, each of these debates is still open. With respect to history, we outline several independent paths that have led to some of the approaches now prevalent in origins-of-life studies. These include one path from early views of life through the scientific revolutions brought about by Linnaeus (von Linn.), Wöhler, Miller, and others. In this approach, new theories, tools, and evidence guide new thoughts about the nature of life and its origin. We also describe another family of paths motivated by a" circularity" approach to life, which is guided by such thinkers as Maturana & Varela, Gánti, Rosen, and others. These views echo ideas developed by Kant and Aristotle, though they do so using modern science in ways that produce exciting avenues of investigation. By exploring the history of these ideas, we can see how many of the issues that currently interest us have been guided by the contexts in which the ideas were developed. The disciplinary backgrounds of each of these scholars has influenced the questions they sought to answer, the experiments they envisioned, and the kinds of data they collected. We conclude by encouraging scientists and scholars in the humanities and social sciences to explore ways in which they can interact to provide a deeper understanding of the conceptual assumptions, structure, and history of origins-of-life research. This may be useful to help frame future research agendas and bring awareness to the multifaceted issues facing this challenging scientific question.
Assuntos
Biologia/história , Química/história , Historiografia , Informática/história , Origem da Vida , Paleontologia/história , Filosofia/história , História do Século XVI , História do Século XVII , História do Século XVIII , História do Século XIX , História do Século XX , História do Século XXI , Biologia Molecular/históriaRESUMO
In the received view of the history of the Modern Evolutionary Synthesis, paleontology was given a prominent role in evolutionary biology thanks to the significant influence of paleontologist George Gaylord Simpson on both the institutional and conceptual development of the Synthesis. Simpson's 1944 Tempo and Mode in Evolution is considered a classic of Synthesis-era biology, and Simpson often remarked on the influence of other major Synthesis figures - such as Ernst Mayr and Theodosius Dobzhansky - on his developing thought. Why, then, did paleontologists of the 1970s and 1980s - Stephen Jay Gould, Niles Eldredge, David M. Raup, Steven Stanley, and others - so frequently complain that paleontology remained marginalized within evolutionary biology? This essay considers three linked questions: first, were paleontologists genuinely welcomed into the Synthetic project during its initial stages? Second, was the initial promise of the role for paleontology realized during the decades between 1950 and 1980, when the Synthesis supposedly "hardened" to an "orthodoxy"? And third, did the period of organized dissent and opposition to this orthodoxy by paleontologists during the 1970s and 1980s bring about a long-delayed completion to the Modern Synthesis, or rather does it highlight the wider failure of any such unified Darwinian evolutionary consensus?
Assuntos
Evolução Biológica , Genética Populacional/história , Paleontologia/história , Seleção Genética , História do Século XXRESUMO
Although the buying, selling, and trading of fossils has been a principle part of paleontological practice over the centuries, the commercial collection of fossils today has re-emerged into a pervasive and lucrative industry. In the United States, the number of commercial companies driving the legal, and sometimes illegal, selling of fossils is estimated to have doubled since the 1980s, and worries from academic paleontologists over this issue has increased accordingly. Indeed, some view the commercialization of fossils as one of the greatest threats to paleontology today. In this article, I address the story of "Sue"-the largest, most complete, and most expensive Tyrannosaurus rex ever excavated-whose discovery incited a series of high-profile legal battles throughout the 1990s over the question of "Who owns Sue?" Over the course of a decade, various stakeholders from academic paleontologists and fossil dealers to Native Americans, private citizens, and government officials all laid claim to Sue. In exploring this case, I argue that assumptions of authority are responsible for initiating and sustaining debates over fossil access. Here, assumptions of authority are understood as assumptions of ownership, or expertise, or in some cases both. Viewing the story from this perspective illuminates the significance of fossils as boundary objects. It also highlights the process of boundary-work by which individuals and groups constructed or deconstructed borders around Sue (specifically) and fossil access (more generally) to establish their own authority. I draw on science studies scholarship as well as literature in the professionalization, commercialization, and valuation of science to examine how assumptions of authority facilitated one of the most divisive episodes in recent paleontological history and the broader debate on the commercial collection of vertebrate fossil material in the United Sates.
Assuntos
Fósseis/história , Propriedade , Paleontologia/história , Animais , Dinossauros , História do Século XX , História do Século XXI , Manejo de Espécimes/históriaRESUMO
The fossilized primate skull known as the Taungs Baby, discovered in South Africa, was put forward in 1925 as a controversial 'missing link' between humans and apes. This essay examines the controversy generated by the fossil, with a focus on practice and the circulation of material objects. Viewing the Taungs story from this perspective provides a new outlook on debates, one that suggests that attention to the importance of place, particularly the ways that specific localities shape scientific practices, is crucial to understanding such controversies. During the 1920s, the fossil itself did not move or circulate from its South African location, a fact that raised methodological concerns in understanding its significance and drew immense criticism from a range of experts. Examining the criticisms regarding the fossil's failure to circulate draws attention to the importance of centers of accumulation in the analysis of hominid fossils. Diverging from existing histories that primarily emphasize the role of theory in paleoanthropological debates, then, this article argues that scientific practice played an important role in the Taungs fossil controversy. Examining this dimension of the debates has broader implications for revealing the underlying imperial assumptions that guided hominid paleontology during the early twentieth century.
Assuntos
Evolução Biológica , Hominidae/anatomia & histologia , Paleontologia/história , Animais , Antropologia Física/história , Fósseis/anatomia & histologia , História do Século XX , História do Século XXIRESUMO
In this paper, I investigate the variety and richness of the taxonomical practices between the end of the nineteenth and the early twentieth centuries. During these decades, zoologists and paleontologists came up with different quantitative practices in order to classify their data in line with the new biological principles introduced by Charles Darwin. Specifically, I will investigate Florentino Ameghino's mathematization of mammalian dentition and the quantitative practices and visualizations of several German-speaking paleontologists at the beginning of the twentieth century. In so doing, this paper will call attention to the visual and quantitative language of early twentieth-century systematics. My analysis will therefore contribute to a prehistory of the statistical frame of mind in biology, a study which has yet to be written in full. Second, my work highlights the productive intertwinement between biological practices and philosophical frameworks at the turn of the nineteenth century. Deeply rooted in Kantian bio-philosophy, several biologists sought to find rules in order to apply ordering principles to chaotic taxonomic information. This implies the necessity to investigate the neglected role of Kantian and Romantic bio-philosophy in the unfolding of twentieth-century biology.
Assuntos
Classificação/métodos , Paleontologia/história , Filosofia/história , Zoologia/história , Argentina , Alemanha , História do Século XIX , História do Século XXRESUMO
From the early nineteenth century, the successful use of fossils in stratigraphy oriented paleontology (and particularly the study of fossil invertebrates) towards geology. The consequent marginalising of biological objectives was countered in the twentieth century by the rise of 'Paläobiologie', first in the German cultural area and only later, as 'paleobiology', in the anglophone world. Several kinds of paleobiological research flourished internationally after the Second World War, among them the novel field of 'paleoecology'. Within this field there were attempts to apply functional morphology to the problematical cases of fossil organisms, for which functions cannot be observed directly. This article describes the origins of the kind of functional inference for fossils that I proposed in 1961 as the method of 'paradigms' (a year before Thomas Kuhn made that word more widely familiar with a quite different meaning). Here I summarize some of my 'worked exemplars', which were intended to show the paradigm method in action. These case-studies were all taken from the paleontologically important phylum of the Brachiopoda, but the method was claimed to have much wider implications for the interpretation of the fossil record in terms of adaptive evolution. This article takes the history of the paradigm method as far as the late 1960s. I hope to trace, in a sequel, its ambivalent fate during the 1970s and beyond, when for example Gould's critique of 'the adaptationist programme' and the rise of computer-based quantitative methods for the evolutionary interpretation of the fossil record led to the relative eclipse of functional morphology in paleontology.
Assuntos
Fósseis/anatomia & histologia , Invertebrados/anatomia & histologia , Paleontologia/história , Animais , Evolução Biológica , História do Século XX , Características de História de Vida , Paleontologia/métodosRESUMO
An earlier article described the mid-twentieth century origins of the method of "paradigms" in paleobiology, as a way of making testable hypotheses about the functional morphology of extinct organisms. The present article describes the use of "paradigms" through the 1970s and, briefly, to the end of the century. After I had proposed the paradigm method to help interpret the ecological history of brachiopods, my students developed it in relation to that and other invertebrate phyla, notably in Euan Clarkson's analysis of vision in trilobites. David Raup's computer-aided "theoretical morphology" was then combined with my functional or adaptive emphasis, in Adolf Seilacher's tripartite "constructional morphology." Stephen Jay Gould, who had strongly endorsed the method, later switched to criticizing the "adaptationist program" he claimed it embodied. Although the explicit use of paradigms in paleobiology had declined by the end of the century, the method was tacitly subsumed into functional morphology as "biomechanics."
Assuntos
Fósseis/anatomia & histologia , Invertebrados/anatomia & histologia , Paleontologia/história , Animais , Artrópodes/anatomia & histologia , Evolução Biológica , Fenômenos Biomecânicos , História do Século XX , Características de História de Vida , Paleontologia/métodosRESUMO
Adolf Seilacher (1925-2014) was a German paleontologist who made the concept of Konstruktions-Morphologie (constructional morphology) his own, recognizing that organism morphology is not simply an adaptive response to selection pressure but incorporates phylogenetic and structural influences as well. He was particularly interested in "fabricational noise," nonadaptive features that are a consequence of available materials and modes of growth, but he also elucidated the nature of adaptive radiations-in bivalves and sand dollars, for example. His interpretations relied on detailed study of specimens, and during a long international career he investigated examples from almost every invertebrate fossil group resulting in his 2015 book Morphodynamics, a compilation of his observations and iconic drawings that was published after his death. Seilacher's insights and observations on fossils have the potential to generate hypotheses about evolutionary development that may eventually be tested experimentally.
Assuntos
Morfogênese , Paleontologia/história , História do Século XX , História do Século XXI , Humanos , FilogeniaAssuntos
Paleontologia/história , Zoologia/história , Animais , Evolução Biológica , China , Fósseis , História do Século XX , História do Século XXI , PolôniaAssuntos
Fósseis , Paleontologia/história , Animais , Alemanha , História do Século XX , História do Século XXIAssuntos
Evolução Biológica , Fósseis , Hominidae/classificação , Paleontologia/história , Animais , Ásia , História do Século XX , Hominidae/anatomia & histologia , Quênia , Filogenia , TanzâniaRESUMO
This paper examines the subversive role of statistics paleontology at the end of the 19th and the beginning of the 20th centuries. In particular, I will focus on German paleontology and its relationship with statistics. I argue that in paleontology, the quantitative method was questioned and strongly limited by the first decade of the 20th century because, as its opponents noted, when the fossil record is treated statistically, it was found to generate results openly in conflict with the Darwinian theory of evolution. Essentially, statistics questions the gradual mode of evolution and the role of natural selection. The main objections to statistics were addressed during the meetings at the Kaiserlich-Königliche Geologische Reichsanstalt in Vienna in the 1880s. After having introduced the statistical treatment of the fossil record, I will use the works of Charles Léo Lesquereux (1806-1889), Joachim Barrande (1799-1833), and Henry Shaler Williams (1847-1918) to compare the objections raised in Vienna with how the statistical treatment of the data worked in practice. Furthermore, I will discuss the criticisms of Melchior Neumayr (1845-1890), one of the leading German opponents of statistical paleontology, to show why, and to what extent, statistics were questioned in Vienna. The final part of this paper considers what paleontologists can derive from a statistical notion of data: the necessity of opening a discussion about the completeness and nature of the paleontological data. The Vienna discussion about which method paleontologists should follow offers an interesting case study in order to understand the epistemic tensions within paleontology surrounding Darwin's theory as well as the variety of non-Darwinian alternatives that emerged from the statistical treatment of the fossil record at the end of the 19th century.
Assuntos
Evolução Biológica , Paleontologia/história , Estatística como Assunto/história , Animais , Fósseis , Alemanha , História do Século XIX , Seleção GenéticaRESUMO
How much is a dinosaur worth? This essay offers an account of the way vertebrate fossils were priced in late 19th-century America to explore the process by which monetary values are established in science. Examining a long and drawn-out negotiation over the sale of an unusually rich dinosaur quarry in Wyoming, I argue that, on their own, abstract market principles did not suffice to mediate between supply and demand. Rather, people haggling over the price of dinosaur bones looked to social norms from the mineral industry for cues on how to value these rare and unusual objects, adopting a set of negotiation tactics that exploited asymmetries in the distribution of scarce information to secure the better end of the deal. On the mining frontier in America's Gilded Age, dinosaurs were thus valued in much the same way as any other scarce natural resource one could dig out of the ground, including gold, silver, and coal.