Imaging techniques in the study of fossil spiders

Selden, Paul A.; Penney, David

doi:10.1016/j.earscirev.2017.01.007

Cited by 15 publications

(5 citation statements)

References 94 publications

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“…The preservation of some fossils in Oise amber, especially insects, is of high quality, with sometimes even internal soft tissues, like organs or musculature, clearly visible after the necessary scanning procedures (van de Kamp et al 2014). It is in this respect comparable with Baltic amber (Grimaldi et al 1994;Kehlmaier et al 2014;Selden and Penney 2017). The insect diversity found in Oise amber was examined in 2009, and revealed about 17 insect orders with different family diversities (Brasero et al 2009).…”

Section: Introductionmentioning

confidence: 58%

Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin

Viertler¹,

Klopfstein²,

Jouault³

et al. 2022

JHR

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Despite their ecological importance, Darwin wasps (Ichneumonidae) are among the most poorly studied groups of organisms. It is therefore not surprising that their fossil record is even more poorly understood than their extant diversity. The early Eocene seems rather fossil-poor regarding Ichneumonidae in amber and only one species,Palaeometopius eocenicusMenier et al., 2004, was described so far from Oise Amber from the Paris basin. Here, two new ichneumonid genera and species,Madma oisellagen. et. sp. nov.andPappous trichomatiusgen. et. sp. nov.are described and the placement ofPalaeometopius eocenicusis revised. The three fossils are well-preserved and might represent stem taxa of Tryphoninae and Phygadeuontinae. They are a highly important addition to the early Palaeogene fossil record of Ichneumonidae that otherwise mainly consists of compression fossils, which yield far less detail of the specimens’ morphology than amber pieces. Among the more than 1,000 Oise amber pieces examined, only three Ichneumonidae specimens have been found, versus about 60 Braconidae, a ratio very different from other amber deposits. Identification of additional ichneumonid specimens from this period (lowermost Eocene) is of particular importance for a better understanding of the subfamily and species compositions of this family after the K-Pg mass extinction.

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Section: Introductionmentioning

confidence: 58%

Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin

Viertler¹,

Klopfstein²,

Jouault³

et al. 2022

JHR

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“…Preparation and imaging methods follow Selden & Penney [ 25 ]. The photographs were taken with a Nikon SMZ 25 and an attached Nikon DS-Ri 2 digital camera system, as well as a Nikon ECLIPSE Ni and an attached Nikon DS-Ri 2 digital camera system.…”

Section: Methodsmentioning

confidence: 99%

Maternal care in Mid-Cretaceous lagonomegopid spiders

2021

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Maternal care benefits the survival and fitness of offspring, often at a cost to the mother's future reproduction, and has evolved repeatedly throughout the animal kingdom. In extant spider species, this behaviour is very common and has different levels and diverse forms. However, evidence of maternal care in fossil spiders is quite rare. In this study, we describe four Mid-Cretaceous (approx. 99 Ma) amber specimens from northern Myanmar with an adult female, part of an egg sac and some spiderlings of the extinct family Lagonomegopidae preserved, which suggest that adult lagonomegopid females probably built and then guarded egg sacs in their retreats or nests, and the hatched spiderlings may have stayed together with their mother for some time. The new fossils represent early evidence of maternal care in fossil spiders, and enhance our understanding of the evolution of this behaviour.

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“…In particular, the usage of confocal laser scanning microscopy was analyzed by Clark et al (scanning of trichomes) [Cla10a] and Zaharenko et al (scanning of a spider) [Zak19a]. Selden took advantage of cameras, microscopes and X-ray computed tomography for imaging fossil spiders [Sel17a]. Kamp et al showed possibilities of using X-ray microtomography with amber [Kam14a].…”

Section: Related Workmentioning

confidence: 99%

3D Scanning of Semitransparent Amber with and without Inclusions

Kaczmarek¹,

Lebiedź²,

Jaroszewicz³

et al. 2021

CSRN

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This paper is concerned with making 3D scans of semitransparent ambers with and without inclusions. The paper presents results of using a variety of devices applied for this purpose. Equipment used in the experiments includes a 3D laser scanner, a structured light scanner, a stereo camera, a camera array and a tomograph. The main object used in the experiment was an amber with a fossil of a lizard. The paper shows possibilities of acquiring the 3D structure of fossils embedded in semitransparent material which interfere with the measurement performed by 3D scanning equipment. Moreover, the paper shows the application of results of 3D scanning as the 3D scan of a lizard was reconstructed in a virtual reality cave making it possible to visualize in detail its shape and texture

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Imaging techniques in the study of fossil spiders

Cited by 15 publications

References 94 publications

Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin

Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin

Maternal care in Mid-Cretaceous lagonomegopid spiders

3D Scanning of Semitransparent Amber with and without Inclusions

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Imaging techniques in the study of fossil spiders

Cited by 15 publications

References 94 publications

﻿Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin

﻿Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin

Maternal care in Mid-Cretaceous lagonomegopid spiders

3D Scanning of Semitransparent Amber with and without Inclusions

Contact Info

Product

Resources

About

Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin

Darwin wasps (Hymenoptera, Ichneumonidae) in Lower Eocene amber from the Paris basin