Lark Quarry revisited: a critique of methods used to identify a large dinosaurian track-maker in the Winton Formation (Albian–Cenomanian), western Queensland,Australia

Thulborn, R.A., 2013. Lark Quarry revisited: a critique of methods used to identify a large dinosaurian track-maker in the Winton Formation (Albian–Cenomanian), western Queensland, Australia. Alcheringa, http://dx.doi.org/10.1080/03115518.2013.748482

A remarkable assemblage of dinosaur tracks in the Winton Formation (Albian–Cenomanian) at Lark Quarry, a site in western Queensland, Australia, has long been regarded as evidence of a dinosaurian stampede. However, one recently published study has claimed that existing interpretation of Lark Quarry is incorrect because the largest track-maker at the site was misidentified and could not have played a pivotal role in precipitating a stampede. That recent study has identified the largest track-maker as an ornithopod (bipedal plant-eating dinosaur) similar or identical to Muttaburrasaurus and not, as formerly supposed, a theropod (predaceous dinosaur) resembling Allosaurus. Those iconoclastic claims are examined here and are shown to be groundless: they are based partly on misconceptions and partly on fabricated data that have been assessed uncritically using quantitative measures of questionable significance. Such ill-founded claims do not reveal any substantial flaw in the existing interpretation of the Lark Quarry dinosaur tracks.     

New dinosaur remains from the Late Triassic of southern Brazil (Candelária Sequence,Hyperodapedon Assemblage Zone)

Pretto, F.A., Schultz, C.L., Langer, M.C. 4.02.2015. New dinosaur remains from the Late Triassic of southern Brazil (Candelária Sequence, Hyperodapedon Assemblage Zone). Alcheringa 39, xxx–xxx. ISSN 0311-5518

The oldest unequivocal dinosaurian records come from Upper Triassic strata, mostly from Argentina and Brazil. Recent fieldwork in the Brazilian deposits of Ischigualastian age (late Carnian–earliest Norian) have resulted in the collection of a new specimen (UFRGS-PV-1240-T) identified as dinosaurian by the presence of a concave emargination on the ventral surface of the femoral head and a well-developed deltopectoral crest on the humerus, which extends for ca 40% of its estimated proximodistal length. Although fragmentary, the material increases the dinosaurian record from the Late Triassic of Brazil, which is still modest when compared with coeval Argentine strata. Additionally, UFRGS-PV-1240-T augments the dinosaurian diversity at the ‘Sítio Janner’ site, which was until now restricted to the sauropodomorph Pampadromaeus barberenai. The new specimen is larger than most early dinosaurians (except for herrerasaurids), implying that members of the group were already occupying niches otherwise explored by other larger-bodied taxa in the ‘Sítio Janner’ palaeofauna, and Late Triassic palaeoenvironments in general.

Flávio A. Pretto [flavio_pretto@yahoo.com.br] and Cesar L. Schultz [cesar.schultz@ufrgs.br] Universidade Federal do Rio Grande do Sul, Instituto de Geociências, Setor de Paleovertebrados, Av. Bento Gonçalves, 9500—Bloco J, Prédio 43127, Campus do Vale, Agronomia?Porto Alegre, Rio Grande do Sul, Brazil, CEP 91540-000; Max C. Langer [mclanger@ffclrp.usp.br] Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Departamento de Biologia, Av. Bandeirantes, 3900, CEP 14040-901, Ribeirão Preto, São Paulo, Brazil.     

Strongly aligned coastal boulders on Ko Larn island (Thailand): a proxy for past typhoon‐driven high‐energy wave events in the Bay of Bangkok

Recent studies of elevated carbonate boulder deposits on several rock islands near Bangkok have indicated that Thailand's capital city may not be as protected from typhoon strikes as previously thought. Here, new evidence is presented for past high‐energy wave (HEW) events in the form of statistically significant patterns of boulder alignment on exposed rocky shorelines of Ko Larn island. The long‐axis orientations of 193 coastal sandstone boulders were analysed across four study sites. Several scenarios for the unimodal, bimodal, and polymodal patterns found can be envisaged. Either the most recent HEW event was the strongest—in which case most clasts were rearranged unimodally (one observation site), or the strongest HEW event was earlier and subsequent weaker ones realigned only smaller boulders to produce bimodal or polymodal patterns (three observation sites). Inferred northeastward or eastward onshore flow directions are consistent with palaeo‐typhoons penetrating into the Bay of Bangkok on northwestward curving tracks. The calculated minimum flow velocities required to transport all sampled boulders are 5.5–7.8 m s^?1, similar to other findings throughout the Asia‐Pacific region. It was observed that the absence of a fitted boulder geomorphology lends credence to the earlier proposed time frame of 150–200 years between typhoon phases in the upper Gulf of Thailand. The current work has provided additional insights into the characteristics of past HEW events that have a possibility of reoccurring again at some time in the future. Our findings continue to raise awareness for a reassessment of the risks of coastal hazards for the Chao Phraya River delta and densely populated Bangkok, for which storm surge modelling should be an urgent priority, so as to give better perceptions on how typhoon‐driven marine incursion would impact the city.     

ALPHA-RECOIL TRACKS IN ARCHAEOLOGICAL CERAMIC DATING

Among the manifestations of radioactive decay which can be etched to optical visibility on the surface of mica are tracks from nuclei recoiling from alpha emission, called ‘alpha-recoil tracks’. If, beforeetching, the mica is heated to temperatures of the order of 600°C, all evidence of these tracks is annealed from muscovite mica in a few minutes. Alpha activity observed on mica from pot sherds, from stones surrounding fire places, from fire pits, and fired daub may constitute an alpha-recoil track clock which started at the moment of the last firing of the artifacts.     

Consensus,Conflict, and Partisanship in House Decision Making: A Bill-Level Examination of Committee and Floor Behavior

Although conflict and partisanship are deeply entrenched in the public's view of the U.S. Congress, political scientists have noted that consensus characterizes much of the legislative branch's operations. We build on an expanding literature that moves beyond a focus on roll call voting and explore individual bills as the unit of analysis in an attempt to obtain an accurate picture of the broader context in which House decision making occurs. Drawing on evidence spanning 24 years, we document the extent to which consensus rather than conflict typifies House decision making. Our bill-level analysis facilitates a unique examination of the context in which committees operate as well as the ensuing floor environment. The results provide insight into the factors attending to the degree of consensus and conflict associated with bills—particularly the salience of the issue and the committee of origin—while painting a more complete picture of the day-to-day environment of the U.S. House.     

Microfinance among the Maya: Tracking the Progress of Borrowers

Microfinance has become an increasingly widespread tool for fostering economic growth among the poor in developing countries. This study tracks the progress of 239 borrowers in a Guatemalan microfinance institution from 1994 to 1999. Results from the study show that rapid gains in employment within the sample enterprises after initial credit access were followed by a protracted period of stagnation in employment growth. Other results highlight gender differences in response to credit access, showing — surprisingly — that the long–run growth in hired labour for female entrepreneurs was slightly greater than that for male entrepreneurs.     

The Growth of the Evaluation Tree in the Policy Analysis Forest: Recent Developments in Evaluation

The practice and profession of evaluation is continually evolving. From its early origin in the Great Society years of the 1960s, through its golden years of the 1970s, its transformation under the fiscal conservatism of the Reagan era in the 1980s, and in its maturation during the performance and results era of the 1990s, the field of evaluation continues to evolve in response to broader trends in society. This article examines recent developments and trends in the practice and profession of evaluation. Structured around the evaluation theory tree, the presentation of these developments elaborates on the three main branches of evaluation: methods, use, and valuing. The concluding discussion briefly addresses the central role of evaluation—and other types of knowledge production—in providing actionable evidence for use in public policy and program decision making.     

Nuclear Iran is Not an Option: A new negotiating strategy to prevent Iran from developing nuclear weapons

The negotiations between Iran and the P5+1¹ over Tehran's nuclear enrichment activities have not only failed to reach an agreement but have brought Iran much closer to the threshold of mastering the technology to produce nuclear weapons. There are many factors that precipitated this breakdown, including the West's inability to understand and deal with the Iranian psychological disposition, the failure to present to Iran the severity of the punitive measures that could be inflicted as a consequence of their defiance, and the US administration's misleading policy that gave Iran the room to maneuver. There is an urgent need to adopt a distinctively new strategy toward Iran consisting of three tracks of separate but interconnected negotiations: The first should focus on the current negotiations on Iran's enrichment program and the economic incentive package; the second should concentrate on regional security and the consequences of continued Iranian defiance; and the third track should address Iran's and the United States' grievances against each other. The United States must initiate all three tracks without which future talks will be as elusive as the previous negotiations, except this time the West and Israel will be facing the unsettling prospect of a nuclear Iran.     

Beyond Oral History: A Nineteenth Century Blackfoot Warriors’ Biographic Robe in Comparative and Chronological Context

Biographic tradition artworks produced on the Great Plains by historic-period Native Americans constitute genuine documents of history, recording—in narrative form—real events that took place in people’s lives. In the early 2000s, a previously undocumented example of a painted robe in the biographic tradition became known (the “Malcolm robe”). Preliminary assessment indicated an origin on the northern Plains, possibly by artists of the Blackfoot Confederation. We first discuss comparative Biographic tradition evidence for the origin of the Malcolm robe, extending previous commentaries on the ethnocultural affiliation of this robe. Several diagnostic features of this robe confirm that its most likely ethnocultural origin was Blackfoot. We also list features that support a case that more than one artist was involved in its production. The central focus of our study here was to more reliably establish a date for the painting of this robe using a series of quantitative and statistical comparisons with better-dated examples of Blackfoot biographic robe art. We apply three different dating methods: frequency seriation, occurrence seriation, and a multivariate statistical method. All three methods consistently indicate that the robe dates prior to 1850, confidently supporting a date of at least that age. The analyses and comparison with other similar robes more tentatively indicate a possible date of production during the 1830s. Further historical research urgently awaits this robe. However, with a date of pre-1850 now reliably secured, the robe takes its place as an early nineteenth century example of Blackfoot biographic art, and as part of the historical legacy that this body of documentary art comprises.     

Missing Links. Indigenous Life and Evolutionary Thought in the History of Russian Ethnography

The history of Russian social anthropology has long been best known for the work of three, late nineteenth-century “exile ethnographers,” each sent to the Russian Far East for their anti-tsarist activities as students. All three men—Vladimir Bogoraz, Vladimir Iokhel'son, and Lev Shternberg—produced voluminous and celebrated works on Russian far eastern indigenous life, but it was the young Shternberg who had perhaps the most profound effect on setting the agenda for the canonic evolutionist line soon to take hold in late Russian imperial and early Soviet ethnography. This essay draws on archival, library, and field research to revisit the life and work of Shternberg in order to tell the story of “group marriage” that he documented for the life of one Sakhalin Island indigenous people, Gilyaks (or Nivkhgu, Nivkhi). Documented in this way by Shternberg, the Nivkh kinship system proved a crucial “missing link” for Friedrich Engels, who had long been eager to provide evidence of primitive communism as man's natural state. For Gilyaks, the die was cast. Their role as the quintessential savages of Engels’ favor made them famous in Russian and Soviet ethnographic literature, and significantly enhanced their importance to Soviet government planners. This essay tracks that episode and its aftermaths as a pivotal moment in the history of Russian social anthropology and of evolutionist thought more broadly.     

Geomorphology of snow avalanche impact landforms in the southern Canadian Cordillera

Snow avalanche impact landforms (SAILs) are typically elliptical-shaped depressions bounded by an arcuate ridge located at the base of avalanche paths. The geomorphology of these features is controlled by the topography of the avalanche path, the availability of unconsolidated debris in the impact area and the ability of the avalanche impacts to displace the available debris in the direction of avalanche flow. Ground-based snow avalanches move debris by bulldozing, and airborne snow avalanches move sediment by excavation on impact .
This paper reports on the geomorphology, and surface age and stability of three SAILs in the southern Canadian Cordillera. Dendrochronology and lichenometry were used to date geomorphic activity at the sites. Evidence of present SAIL stability suggests they result from episodic, high-magnitude avalanche impact events over many hundreds of years. All three landforms share common morphologies: a water-filled bowl-shaped depression distally bounded by an arcuate ridge-oriented transverse to the avalanche path. Despite sharing many attributes, field investigations revealed that the origin of each SAIL was a function of the local variations in snow avalanche path topography and availability of unconsolidated debris in the impact area. The snow avalanche path associated with the Blackhorn site has a gentle gradient, which suggests that this SAIL is a result of ground-based avalanches. The SAIL at Spoon Lake appears to be a consequence of a resistant geologic feature that focuses snow avalanches in the impact area and results in explosive excavation. The morphology of the snow avalanche track at Peyto Lake causes large snow avalanches to become airborne prior to impacting and excavating an impact pool. All three SAILs examined in this paper are historically persistent landforms and these observations support previous findings indicating that SAILs require hundreds of years to develop .     

Crescent concerns

France is home to approximately five million people of Muslim origin, giving it western Europe's largest Muslim population. Three‐quarters of French Muslims trace their origins to just three countries—Algeria, Morocco and Tunisia—but half of today's French Muslim population was born in France. Muslims face considerable difficulties, including poor housing, unemployment and discrimination. Some of these issues are the problems of immigrants in general, not Muslims in particular. But Islam does challenge traditional French notions of citizenship and secularism. However, for all the controversy over headscarves and riots in poor suburbs, there are encouraging signs of a better future for Muslims in France.     

The Language of Imperialism in British Electoral Politics, 1880–1910

This article asks us to reconsider the impact of the issue of imperialism in electoral politics in late Victorian and Edwardian Britain. Using a corpus of around five million words of digitised campaign speeches from the years 1880–1910, it examines the language of the nine General Elections held in this period through computerised text-mining. This ‘big data’ analysis produces three conclusions, which in some cases nuance existing interpretations and in others directly challenge them. The first questions the prevailing consensus that elections in the high age of empire featured imperialism as a consistently central issue. The article argues that this interpretation relies too heavily on evidence from a minority of elections—especially the famous ‘khaki’ struggle of 1900—and that in the majority of campaigns in this period, imperialism was relatively unimportant as an election issue, including in the Unionist landslide of 1895. The second argument questions historians’ preoccupation with the ‘contested’ nature of discourses of imperialism and patriotism at elections, and contends that—insofar as the empire was an important campaign issue at all—the Conservatives were considerably more likely to champion it and connect it to politically charged and emotive appeals than were their Liberal opponents. Finally, the article maintains that the languages of imperialism and patriotism have often been unhelpfully conflated by historians, and argues that they could become politically synonymous only in the very specific circumstance of a ‘khaki’ election. In other contests, they could diverge, as is demonstrated by a case study of the campaign of 1906 when patriotism was reclaimed by the Liberals from a domestic, rather than imperial platform.     

The Retreat of the North American Ice Sheet and Shifts in Cyclone Tracks

The alternating retreats and readvances of the North American ice sheet from 18,000 years to 6000 years ago are attributed to shifts in storm tracks. According to the author's theory, proglacial lakes formed during the retreat of the ice sheet became the paths of cyclone tracks whose precipitation led to an accumulation of ice and a readvance of the ice sheet. The readvance into the proglacial lake basins resulted in a reduction or southward shift of cyclone tracks, and this in turn led to a halt of the readvance and a retreat of the ice sheet. As soon as the ice had vacated the Great Lakes basin, the cyclone tracks would once again shift northward and the process of readvance would start all over again.     

《满洲实录》成书考

《满洲实录》是记载满族先世源流及清太祖努尔哈赤事迹的官书。本文考证了《满洲实录》的前身《太祖实录战图》的来历以及与太祖实录的关系,澄清了《太祖实录战图》是一本没有文字的图册。还考证了《满洲实录》成书的时间,并从文献记载和历史事实两方面,指出《满洲实录》83幅插图当中,前6图是乾隆时期所补绘。另外,本文还论证了《满洲实录》中清高宗题诗注文所言"实录八册"为《太祖实录战图》八册,而非后世学者以为的《满洲实录》八卷。在以上考据的基础上,本文首次在史学界揭发《满洲实录》是一部清高宗亲自参与作伪的伪书,并分析了清朝统治者作伪的动机。最后,鉴于《满洲实录》是一部伪书,本文还重新评定了《满洲实录》史料价值。     

Reflections on the historical origin of regions and pays

This paper examines the historical origin of two related but distinct types of country-side or pays in England: those based on early-settled river-valleys and those associated with areas of wold. W. G. Hoskins has pointed out that in Devon early places like Tawton and Taviton derived their names from rivers and were associated with outlying stocks or cattle-farms—Tawstock and Tavistock—which originally formed distinct but related parts of the same river-estate.A similar association is found in many areas. Two examples in Kent, where the evidence for early settlement is unusually abundant, are examined in detail: the estates of the Darenth people and the Bourne people. In both cases settlement pressed inland from the river itself, far up into the wooded Downland or wold. As well as their original river communities they thus developed an outlying area of summer pasture based on isolated forest shielings. The former may have originated before the English invasions and were certainly very early. The development of the shielings into permanent farms occurred later, mainly in the middle- or later-Saxon period.The Kentish evidence is significant for three reasons. First, there can be no doubt that in the county as a whole the wold region or Downland originated as the outlying summer pasture of the river-estates. Secondly, as the isolated shielings evolved into permanent farms, the region developed an independent life of its own, with distinct characteristics from those of the parental river-settlements. Thirdly, the word wold occurs widely in the Downland place-names of East Kent, where it definitely denotes woodland or forest, and not simply the “elevated stretch of open country” which it is often said to signify. Did other areas of wold, now largely woodless, such as the Cotswolds and Lincolnshire Wolds, also originate as the outlying wood-pasture of early river-peoples?     

Red Blood Cell Haemotaphonomy of Experimental Human Bloodstains on Techno-Prehistoric Lithic Raw Materials

Mammalian erythrocytes or red blood cells (RBC)—whose presence in a smear is evidence for blood residues—have been previously reported on prehistoric implements estimated to be approximately two million years old. On the basis of the Principle of Actualism, bloodstains from modern human individuals were obtained on obsidian, limestone and chert. Then, they were stored in a unsterile room under microclimatically unmanipulated fluctuating conditions, for lengths of time ranging from 7 years, 6 months to 10 years, 2 months. Afterwards, the bloodstains were coated with both carbon and gold and then examined by a JEOL JSM-6400 scanning electron microscope (SEM). Results revealed a time-independent preservation of erythrocyte integrity, displaying moon-like shapes, and negative replicas. These results agree with several previously reported SEM analyses of younger mammalian bloodstains on chert and materials other than obsidian and limestone, and lead to consider the moon-like shapes (hecatocytes, a term ex novo) and negative replicas (janocytes, another term ex novo) as the genuine RBC morphologies characteristic of (at least mammalian) bloodstains.     

“Skilled,Cheap, and Desperate”1: Non‐tenure‐track Faculty and the Delusion of Meritocracy

Over the past 25 or so years, geographers have produced sophisticated critical tools to examine systems like patriarchy, racism, and heteronormativity. However, they have not used those critical tools to examine the problem of institutional hierarchy in the academy. There are many kinds of institutional hierarchy, but the paper focuses on one particular structure: the difference between tenure‐track and non‐tenure‐track faculty. I call for much greater critical reflection on the existence and experience of non‐tenure‐track faculty in geography. I argue that it is essential to undermine the structures and assumed wisdom of the hierarchy, for the sake of non‐tenure‐track faculty, the discipline, and the academy as a whole. Destabilizing the structures requires multiple strategies. I argue that one key strategy is for non‐tenure‐track faculty to tell their stories, to offer their critical perspective from the lower rungs of the hierarchy. The last part of the paper is an autobiographical account designed to give a better idea of how one such story might look.     

‘This is the place:’ putting the past on the map

All events noticed in the historical record necessarily occurred—if they occurred at all—in a specific time and place. Although perhaps more interested in the first of these, historians and others have also attempted to localize these events as far as possible. Using evidence from the written and oral sources, archaeology, aerial photography, and the like, they attempt to match present-day locales with this testimony. Inevitably problems arise. Sometimes these are due to the exiguity of the evidence, sometimes to the desire to match the past and the present in specific ways regardless of the evidence, and sometimes to a failure to appreciate that both historiography and topography are dynamic entities. In this paper I look at a few examples of the phenomenon that can serve as a microcosm of the issues that arise and suggest that they serve as a cautionary tale.     

Reconsideration of criteria for differentiating faunal assemblages accumulated by hyenas and hominids

Zooarchaeologists have established several criteria for differentiating hominid‐ and hyena‐derived faunal assemblages. In some cases, however, the patterns of skeletal part representation and bone surface modification on which these criteria are ultimately based have been observed in fossil bone assemblages of unknown origin, rather than in modern assemblages of known origin. When the proposed criteria are evaluated within an actualistic framework, only three are able to differentiate between hominid‐ and hyena‐created faunal assemblages. I suggest that only these three criteria—proportions of carnivores to ungulates in the assemblage, the preserved condition of long bone specimens (either as whole cylinders or as splintered shaft fragments), and the types of bone surface modifications—should be retained as important factors in a diagnosis of the ancient bone‐collector. The remaining four criteria—the relative proportion of horn pieces in the assemblage, the relative representation of podial bones, the relative representation of small and large bovid skeletal parts, and bovid mortality profiles—are not relevant or applicable to the problem of differentiating hominid‐ from hyena‐derived faunal assemblages. Copyright © 2002 John Wiley & Sons, Ltd.