A Hub for Africa? The Information and Communications Technology Sector in Cape Town

Stuart, John A.

doi:10.1007/978-3-030-06206-4_15

Cited by 13 publications

(16 citation statements)

References 5 publications

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“…Tramline trackways contain left and right lines of tracks that are clearly and widely separate, yet form part of a double-line unit (Stuart and Stuart, 2019) (i.e., they exhibit a wide straddle). They may be made by a variety of extant trackmakers: crocodiles, lizards, tortoises, terrapins, sea-turtles, frogs, and many types of invertebrates (Stuart and Stuart, 2019). In the examples described herein, the straddle size excludes all but the largest contenders.…”

Section: Discussionmentioning

confidence: 99%

“…Crocodylian trackway morphology has been well documented by Farlow et al (2017) from long trackways of the American crocodile ( Crocodylus acutus ). Southern African tracking manuals consistently depict tracks of the Nile crocodile ( Crocodylus niloticus ) (Liebenberg, 2000; van den Heever et al, 2017; Stuart and Stuart, 2019). Crocodylian pes tracks are substantially longer than they are wide.…”

Section: Discussionmentioning

confidence: 99%

“…Van den Heever et al (2017) noted that a 100 cm long monitor lizard would register a manus track 6 cm long and a pes track 8 cm long. However, a long tail drag impression is usually present (Liebenberg, 2000;van den Heever et al, 2017;Stuart and Stuart, 2019), which is inconsistent with the midline features noted at the main site, and is absent from all the other sites. Track dimensions and footfall patterns are not consistent with those of monitors, which can thus be excluded.…”

Section: Varanidsmentioning

confidence: 99%

“…Liebenberg (2000), van den Heever et al (2017), and Stuart and Stuart (2019) provide track descriptions of extant southern African tortoises, ranging in size from the tiny speckled padloper ( Chersobius signatus ) to the large leopard tortoise ( Stigmochelys pardalis ). Most species have five claws on the front feet and four claws on the hind feet.…”

Section: Tortoise Track Morphologymentioning

confidence: 99%

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Large Pleistocene tortoise tracks on the Cape south coast of South Africa

Helm

Carr²,

Cawthra³

et al. 2022

Quat. res.

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Although tortoises (Testudinidae) are a familiar clade of reptiles, with a body fossil record extending to at least the Eocene, hitherto no tortoise ichnosites have been described. Here, a number of sites attributed to tortoise trackmakers are identified within Pleistocene aeolianites on South Africa's Cape south coast. These date from late Marine Isotope Stage 6 to Marine Isotope Stage 4. The findings indicate large trackmakers, with evidence of a trackmaker length of more than a meter—substantially longer than the largest extant tortoises in southern Africa. This suggests either the presence of an extinct very large tortoise species, or that Pleistocene leopard tortoises in the region were larger than their descendants. Variations in substrate properties are responsible for a variety of track and trace forms. A mismatch exists between the reported ichnological evidence for large tortoises, and the regional archaeological and body fossil records, which almost exclusively comprise smaller tortoises. The findings illustrate the potential of ichnology to complement and augment the paleontological and archaeological records.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Varanidsmentioning

confidence: 99%

Section: Tortoise Track Morphologymentioning

confidence: 99%

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Large Pleistocene tortoise tracks on the Cape south coast of South Africa

Helm

Carr²,

Cawthra³

et al. 2022

Quat. res.

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“…Além disso, com o crescente conteúdo tecnológico dos veículos a motor e respetivos componentes, o setor dos serviços tecnológicos também deve ser capaz de responder às necessidades. A Cidade do Cabo é atualmente o polo tecnológico mais conhecido na África Austral, podendo servir de modelo e meio para o desenvolvimento tecnológico noutros locais da região (Stuart, 2019). Os principais ingredientes para o sucesso do desenvolvimento de serviços tecnológicos são a promoção da educação, o apoio ao empreendedorismo tecnológico e o incentivo à inovação.…”

Section: O Ambiente Empresarial E a Criação De Incentivos São Vitais ...unclassified

Editorial

2022

Dinâmicas Do Desenvolvimento Em África

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Tracking the extinct giant Cape zebra (Equus capensis) on the Cape south coast of South Africa

et al. 2023

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The giant Cape zebra (Equus capensis) is one of the extinct Quaternary large mammal species of southern Africa, and the largest equid from the Quaternary of Africa. Twenty-six Pleistocene equid tracksites have been identified in aeolianites on the Cape south coast of South Africa. An age range of 161 ± 12 ka to 43 ± 4 ka has been established through Optically Stimulated Luminescence. More than half of the sites contain large-equid tracks, representing the first ichnosites attributed to E. capensis. Smaller equid tracks may have been registered by the quagga (E. quagga quagga). The abundance of E. capensis tracksites on the Cape south coast contrasts with the paucity of body fossils of the species from the region, contrasting with the impression obtained from the body fossil record that E. capensis was predominantly a west coast species in the region. The new data illustrate the capacity of the body fossil and trace fossil records to complement each other. The loss of suitable habitat provided by the Palaeo-Agulhas Plain was probably a contributing factor in the extinction of this large-bodied grazer. A long trackway at Driefontein, attributed to E. capensis, adds to a sparse global record of fossil horse trackways.

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A Hub for Africa? The Information and Communications Technology Sector in Cape Town

Cited by 13 publications

References 5 publications

Large Pleistocene tortoise tracks on the Cape south coast of South Africa

Large Pleistocene tortoise tracks on the Cape south coast of South Africa

Editorial

Tracking the extinct giant Cape zebra (Equus capensis) on the Cape south coast of South Africa

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