First jumping spider (Araneae: Salticidae) from mid-Miocene Zhangpu amber

Wang, Han; Lei, Xiaojie; Luo, Cihang; Dunlop, Jason A.

doi:10.1016/j.palwor.2022.06.002

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…These findings have continued to refine our understanding of insect evolution [70][71][72]. For example, the oldest jumping spider (Araneae: Salticidae) preserved in the Zhangpu amber exhibits a morphology distinct from other fossil salticids described so far [72]. Plants fossils are less commonly held in the Zhangpu amber but still occur and provide meaningful information.…”

Section: Miocene Tropical Paradisementioning

confidence: 90%

Dating Amber: Review and Perspective

Chang

Zheng

2023

Minerals

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Amber is a fossilized tree resin that ranges in age from the Carboniferous to the Cenozoic. It occurs globally from the Arctic to Antarctica. As the resin petrifies and turns into amber, it can enclose and preserve other materials. Amber with inclusions can help reconstruct past biodiversity and ecosystems. Some amber contains fossils representing the oldest and most detailed records of critical evolutionary traits or markers. Inclusions can even capture behavioral indicators previously only observed in extant organisms. Evidence of insect pollination of flowering plants and dragonfly mating behavior appears in amber, as does the morphological specialization of insects, indicating sociality and social parasitism. Dating amber deposits can help calibrate evolutionary events and inform reconstructions of past ecosystems. While the direct dating of amber remains impossible, age constraints on most amber deposits are based on correlations or relative dating, methods that come with significant uncertainties. This study discusses two cases using 40Ar/39Ar and U–Pb geochronologic methods to constrain the ages of amber deposits in China and the paleo-ecosystems they record. This paper also summarizes how radio-isotopic dating and other techniques combined with the analysis of inclusions in amber can help elucidate biogeography and the dynamic relationship between life and the physical environment.

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Section: Miocene Tropical Paradisementioning

confidence: 90%

Dating Amber: Review and Perspective

Chang

Zheng

2023

Minerals

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Preface: The mid-Miocene Zhangpu Biota

Wang,

Shi

2023

Palaeoworld

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Description and evolutionary biogeography of the first Miocene jumping spider (Aranaea: Salticidae) from a southern continent

Richardson,

McCurry,

Frese

2023

Zoological Journal of the Linnean Society

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Examination of a fossil from a Miocene Konservat-Lagerstätte (c. 11–16 Mya) from Australia shows it to be an astioid jumping spider that is here described as Simaetha sp. indet. Fossilization in the iron oxide–hydroxide mineral goethite led to a high-fidelity preservation of not only the exterior, but of the pharyngeal plate and a neuropile in the cephalothorax. The discovery of the fossil supports the molecular-based hypothesis that the Late Oligocene/Early Miocene radiation of astioid genera occurred in Australasia. Modern Asian genera then would be the result of northward migrations from Australia rather than a movement in the other direction. Biogeographically, the Miocene Simaetha fits within the predicted bioclimatic distribution of the genus today, though the bioclimatic requirements of the fossil species are now found in eastern Queensland rather than in central New South Wales. Simaetha, it seems has retained its original bioclimatic profile for 15 Myr, even though climatic and ecological conditions in Australia have changed significantly. The fossil record now shows the independent evolution of modern genera during the Early Miocene in at least five different salticid lineages on two continents. These salticid radiations occurred at a time of planet-wide, rapid climatic and ecological change.

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First jumping spider (Araneae: Salticidae) from mid-Miocene Zhangpu amber

Cited by 3 publications

References 14 publications

Dating Amber: Review and Perspective

Dating Amber: Review and Perspective

Preface: The mid-Miocene Zhangpu Biota

Description and evolutionary biogeography of the first Miocene jumping spider (Aranaea: Salticidae) from a southern continent

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