W. Henry Gilbert
- Published in print:
- 2009
- Published Online:
- March 2012
- ISBN:
- 9780520251205
- eISBN:
- 9780520933774
- Item type:
- chapter
- Publisher:
- University of California Press
- DOI:
- 10.1525/california/9780520251205.003.0010
- Subject:
- Biology, Evolutionary Biology / Genetics
Rhinos are known from North America and the Old World, and have a well-documented fossil record. Rhinocerotidae is first reported from the Eocene, and members of the family persisted through the ...
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Rhinos are known from North America and the Old World, and have a well-documented fossil record. Rhinocerotidae is first reported from the Eocene, and members of the family persisted through the remaining Cenozoic. This chapter examines fossil remains of two Rhinocerotidae representatives present in the Daka Member. Specimens of Ceratotherium simum, a grazer, include a mandible, a maxilla, and several dental specimens. Daka Member Diceros is represented by a single premolar.Less
Rhinos are known from North America and the Old World, and have a well-documented fossil record. Rhinocerotidae is first reported from the Eocene, and members of the family persisted through the remaining Cenozoic. This chapter examines fossil remains of two Rhinocerotidae representatives present in the Daka Member. Specimens of Ceratotherium simum, a grazer, include a mandible, a maxilla, and several dental specimens. Daka Member Diceros is represented by a single premolar.
Joanne C. Burgess, Chris J. Kennedy, and Charles (Chuck) Mason
- Published in print:
- 2014
- Published Online:
- January 2014
- ISBN:
- 9780199676880
- eISBN:
- 9780191756252
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199676880.003.0015
- Subject:
- Economics and Finance, Development, Growth, and Environmental
Many wildlife commodities, such as ivory, rhino horn and bear bile, have been stockpiled in large quantities by speculators who expect that future price increases justify forgoing the interest income ...
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Many wildlife commodities, such as ivory, rhino horn and bear bile, have been stockpiled in large quantities by speculators who expect that future price increases justify forgoing the interest income associated with current sales. When supply from private stores competes with supply from ‘wild populations’ (in nature), and when speculators are able to collude, it may be optimal to coordinate on an extinction strategy. This chapter finds that it is optimal to deter poachers’ entry either by depressing prices (carefully timing own supply) or by depressing wild stocks. Which strategy maximizes profits depends on the initial wildlife stock and initial speculative stores. The model is applied to black rhino conservation, and results suggest that it is likely that “banking on extinction” is profitable if current speculators can collude. This chapter also finds that extinction is favoured by such factors as low discount rates or high growth rates.Less
Many wildlife commodities, such as ivory, rhino horn and bear bile, have been stockpiled in large quantities by speculators who expect that future price increases justify forgoing the interest income associated with current sales. When supply from private stores competes with supply from ‘wild populations’ (in nature), and when speculators are able to collude, it may be optimal to coordinate on an extinction strategy. This chapter finds that it is optimal to deter poachers’ entry either by depressing prices (carefully timing own supply) or by depressing wild stocks. Which strategy maximizes profits depends on the initial wildlife stock and initial speculative stores. The model is applied to black rhino conservation, and results suggest that it is likely that “banking on extinction” is profitable if current speculators can collude. This chapter also finds that extinction is favoured by such factors as low discount rates or high growth rates.
William J. Sanders, D. Tab Rasmussen, and John Kappelman
- Published in print:
- 2010
- Published Online:
- March 2012
- ISBN:
- 9780520257214
- eISBN:
- 9780520945425
- Item type:
- chapter
- Publisher:
- University of California Press
- DOI:
- 10.1525/california/9780520257214.003.0012
- Subject:
- Biology, Evolutionary Biology / Genetics
Embrithopoda is represented in the Afro-Arabian fossil record by Arsinoitherium and Namatherium. Physically impressive, Arsinoitherium superficially resembled extant rhinos in the ornamentation of ...
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Embrithopoda is represented in the Afro-Arabian fossil record by Arsinoitherium and Namatherium. Physically impressive, Arsinoitherium superficially resembled extant rhinos in the ornamentation of its cranium by massive, protuberant horns, and by the great magnitude of its skeletal frame. Arsinoitheres were endemic to Afro-Arabia during the middle Eocene through late Oligocene and are best known from the Fayum, Egypt. The last known occurrence of embrithopods was at Lothidok, Kenya, of latest Oligocene age. Conflicting ideas about embrithopod relationships have been addressed by recent morphologic and phylogenetic analyses. These studies reaffirm Simpson's (1945) earlier classification of arsinoitheres (and, by extension, Embrithopoda) in Paenungulata, with proboscideans, sirenians, desmostylians, and hyraxes. Nonetheless, debate continues about whether arsinoitheres are more closely related to proboscideans, sirenians, or are a more distant sister taxon to tethytheres. Molecular analyses of extant taxa suggest that paenungulates belong with elephant shrews, African insectivorans, and aardvarks in the clade Afrotheria, whose modern biogeography is largely African. This chapter describes the systematic paleontology of Embrithopoda.Less
Embrithopoda is represented in the Afro-Arabian fossil record by Arsinoitherium and Namatherium. Physically impressive, Arsinoitherium superficially resembled extant rhinos in the ornamentation of its cranium by massive, protuberant horns, and by the great magnitude of its skeletal frame. Arsinoitheres were endemic to Afro-Arabia during the middle Eocene through late Oligocene and are best known from the Fayum, Egypt. The last known occurrence of embrithopods was at Lothidok, Kenya, of latest Oligocene age. Conflicting ideas about embrithopod relationships have been addressed by recent morphologic and phylogenetic analyses. These studies reaffirm Simpson's (1945) earlier classification of arsinoitheres (and, by extension, Embrithopoda) in Paenungulata, with proboscideans, sirenians, desmostylians, and hyraxes. Nonetheless, debate continues about whether arsinoitheres are more closely related to proboscideans, sirenians, or are a more distant sister taxon to tethytheres. Molecular analyses of extant taxa suggest that paenungulates belong with elephant shrews, African insectivorans, and aardvarks in the clade Afrotheria, whose modern biogeography is largely African. This chapter describes the systematic paleontology of Embrithopoda.
D. Tab Rasmussen and Mercedes Gutiérrez
- Published in print:
- 2010
- Published Online:
- March 2012
- ISBN:
- 9780520257214
- eISBN:
- 9780520945425
- Item type:
- chapter
- Publisher:
- University of California Press
- DOI:
- 10.1525/california/9780520257214.003.0013
- Subject:
- Biology, Evolutionary Biology / Genetics
In the first decade of the twentieth century, British zoologist Charles Andrews described new fossil mammals from Egypt that demonstrated Africa had once harbored an archaic, endemic fauna very ...
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In the first decade of the twentieth century, British zoologist Charles Andrews described new fossil mammals from Egypt that demonstrated Africa had once harbored an archaic, endemic fauna very different from the continent's modern mammal communities. This fauna, we now know, characterized much or all of the continent during the early Tertiary, a time when Africa was isolated from Eurasia by the Tethys Sea. The order Hyracoidea was a central component of this endemic fauna, a startling realization given the inauspicious nature of the living hyraxes, which today include only a few small species in three genera. The African fossil record reveals dozens of hyracoids that ranged in size from that of small rabbits upward to that of modern Sumatran rhinos. Hyracoids have played an important role in studies of mammalian evolution owing to their relation to elephants. This chapter describes the systematic paleontology of Hyracoidea.Less
In the first decade of the twentieth century, British zoologist Charles Andrews described new fossil mammals from Egypt that demonstrated Africa had once harbored an archaic, endemic fauna very different from the continent's modern mammal communities. This fauna, we now know, characterized much or all of the continent during the early Tertiary, a time when Africa was isolated from Eurasia by the Tethys Sea. The order Hyracoidea was a central component of this endemic fauna, a startling realization given the inauspicious nature of the living hyraxes, which today include only a few small species in three genera. The African fossil record reveals dozens of hyracoids that ranged in size from that of small rabbits upward to that of modern Sumatran rhinos. Hyracoids have played an important role in studies of mammalian evolution owing to their relation to elephants. This chapter describes the systematic paleontology of Hyracoidea.
Denis Geraads
- Published in print:
- 2010
- Published Online:
- March 2012
- ISBN:
- 9780520257214
- eISBN:
- 9780520945425
- Item type:
- chapter
- Publisher:
- University of California Press
- DOI:
- 10.1525/california/9780520257214.003.0034
- Subject:
- Biology, Evolutionary Biology / Genetics
Among the Perissodactyla, Rhinocerotidae have traditionally been allied with tapirs because they lack a mesostyle, even though other primitive perissodactyls may also lack it. The most parsimonious ...
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Among the Perissodactyla, Rhinocerotidae have traditionally been allied with tapirs because they lack a mesostyle, even though other primitive perissodactyls may also lack it. The most parsimonious recent cladistic analyses, using no less than 282 characters, unite under the Rhinocerotini (which includes the bulk of the Rhinocerotinae) as an unresolved trichotomy, the Teleoceratina (Old and New World brachypotheres), the Aceratheriina (Old World aceratheres and related forms), and the Rhinocerotina (non-elasmothere Old World horned rhinos); the Elasmotheriini are the sister group of the Rhinocerotinae. There are five living species, all of them seriously threatened or even close to extinction: Dicerorhinus sumatrensis, found in Sumatra and the Malaysian peninsula; Rhinoceros sondaicus, R. unicornis, also from southeastern Asia; Ceratotheriumsimum; and Diceros bicornis. Some morphological cladistic analysis and mitochondrial gene sequencing suggests that, among living forms, African rhinos are the sister group of Dicerorhinus + Rhinoceros. This chapter describes the systematic paleontology of Rhinocerotidae.Less
Among the Perissodactyla, Rhinocerotidae have traditionally been allied with tapirs because they lack a mesostyle, even though other primitive perissodactyls may also lack it. The most parsimonious recent cladistic analyses, using no less than 282 characters, unite under the Rhinocerotini (which includes the bulk of the Rhinocerotinae) as an unresolved trichotomy, the Teleoceratina (Old and New World brachypotheres), the Aceratheriina (Old World aceratheres and related forms), and the Rhinocerotina (non-elasmothere Old World horned rhinos); the Elasmotheriini are the sister group of the Rhinocerotinae. There are five living species, all of them seriously threatened or even close to extinction: Dicerorhinus sumatrensis, found in Sumatra and the Malaysian peninsula; Rhinoceros sondaicus, R. unicornis, also from southeastern Asia; Ceratotheriumsimum; and Diceros bicornis. Some morphological cladistic analysis and mitochondrial gene sequencing suggests that, among living forms, African rhinos are the sister group of Dicerorhinus + Rhinoceros. This chapter describes the systematic paleontology of Rhinocerotidae.
Joel Berger
- Published in print:
- 2008
- Published Online:
- February 2013
- ISBN:
- 9780226043630
- eISBN:
- 9780226043647
- Item type:
- book
- Publisher:
- University of Chicago Press
- DOI:
- 10.7208/chicago/9780226043647.001.0001
- Subject:
- Biology, Animal Behavior / Behavioral Ecology
At dawn on a brutally cold January morning, the author crouched in the icy grandeur of the Teton Range. It had been three years since wolves were reintroduced to Yellowstone after a sixty-year ...
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At dawn on a brutally cold January morning, the author crouched in the icy grandeur of the Teton Range. It had been three years since wolves were reintroduced to Yellowstone after a sixty-year absence, and members of a wolf pack were approaching a herd of elk. To the author's utter shock, the elk ignored the wolves as they went in for the kill. The brutal attack that followed—swift and bloody—led him to hypothesize that after only six decades, the elk had forgotten to fear a species that had survived by eating them for hundreds of millennia. The author's fieldwork that frigid day raised important questions that would require years of travel and research to answer: Can naive animals avoid extinction when they encounter reintroduced carnivores? To what extent is fear culturally transmitted? And how can a better understanding of current predator-prey behavior help demystify past extinctions and inform future conservation? This book is the chronicle of the author's search for answers. From Yellowstone's elk and wolves to rhinos living with African lions and moose coexisting with tigers and bears in Asia, the author tracks cultures of fear in animals across continents and climates, engaging readers with a combination of natural history, personal experience, and conservation.Less
At dawn on a brutally cold January morning, the author crouched in the icy grandeur of the Teton Range. It had been three years since wolves were reintroduced to Yellowstone after a sixty-year absence, and members of a wolf pack were approaching a herd of elk. To the author's utter shock, the elk ignored the wolves as they went in for the kill. The brutal attack that followed—swift and bloody—led him to hypothesize that after only six decades, the elk had forgotten to fear a species that had survived by eating them for hundreds of millennia. The author's fieldwork that frigid day raised important questions that would require years of travel and research to answer: Can naive animals avoid extinction when they encounter reintroduced carnivores? To what extent is fear culturally transmitted? And how can a better understanding of current predator-prey behavior help demystify past extinctions and inform future conservation? This book is the chronicle of the author's search for answers. From Yellowstone's elk and wolves to rhinos living with African lions and moose coexisting with tigers and bears in Asia, the author tracks cultures of fear in animals across continents and climates, engaging readers with a combination of natural history, personal experience, and conservation.
Annette Hübschle
- Published in print:
- 2017
- Published Online:
- August 2017
- ISBN:
- 9780198794974
- eISBN:
- 9780191836442
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780198794974.003.0010
- Subject:
- Business and Management, Finance, Accounting, and Banking, International Business
This chapter shows that the illegalization of an economic exchange is not a straightforward political decision with fixed goalposts, but a protracted process that may encounter unexpected hurdles ...
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This chapter shows that the illegalization of an economic exchange is not a straightforward political decision with fixed goalposts, but a protracted process that may encounter unexpected hurdles along the way to effective implementation and enforcement. While political considerations informed the decision to ban trade in rhino horn initially, diffusion of the prohibition has been uneven and lacks social and cultural legitimacy among key actors along the supply chain. Moreover, some market actors justify their participation in illegal rhino horn markets based on the perceived illegitimacy of the rhino horn prohibition. The concept of “contested illegality” captures an important legitimization device of market participants who do not accept the trade ban.Less
This chapter shows that the illegalization of an economic exchange is not a straightforward political decision with fixed goalposts, but a protracted process that may encounter unexpected hurdles along the way to effective implementation and enforcement. While political considerations informed the decision to ban trade in rhino horn initially, diffusion of the prohibition has been uneven and lacks social and cultural legitimacy among key actors along the supply chain. Moreover, some market actors justify their participation in illegal rhino horn markets based on the perceived illegitimacy of the rhino horn prohibition. The concept of “contested illegality” captures an important legitimization device of market participants who do not accept the trade ban.
Jessica Berson
- Published in print:
- 2016
- Published Online:
- January 2016
- ISBN:
- 9780199846207
- eISBN:
- 9780190272623
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199846207.003.0004
- Subject:
- Music, Dance
In the United Kingdom striptease dancing has a very different history and set of aesthetic values than its US counterpart. While table dancing and lap dancing were integral to striptease in the ...
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In the United Kingdom striptease dancing has a very different history and set of aesthetic values than its US counterpart. While table dancing and lap dancing were integral to striptease in the United States as early as the 1970s, they invaded the exotic dance scene in the United Kingdom only in the mid 1990s, driven by American entrepreneurship. Until the mid-1990s, striptease in Britain was a shame-inducing pursuit that took place in basement pubs and involved women carrying empty pint glasses from customer to customer to solicit tips in order to perform on makeshift stages. The history of the “lap dance wars” in London reveals changes in British constructions of class and sexuality, and in the interplay between them; careful observation of contemporary British striptease dancing allowed analysis of the ramifications of these shifts.Less
In the United Kingdom striptease dancing has a very different history and set of aesthetic values than its US counterpart. While table dancing and lap dancing were integral to striptease in the United States as early as the 1970s, they invaded the exotic dance scene in the United Kingdom only in the mid 1990s, driven by American entrepreneurship. Until the mid-1990s, striptease in Britain was a shame-inducing pursuit that took place in basement pubs and involved women carrying empty pint glasses from customer to customer to solicit tips in order to perform on makeshift stages. The history of the “lap dance wars” in London reveals changes in British constructions of class and sexuality, and in the interplay between them; careful observation of contemporary British striptease dancing allowed analysis of the ramifications of these shifts.
