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Achim H. Schwermann
American Museum of Natural History
12Publications
4H-index
50Citations
Publications 13
Newest
#1Thomas Martin (University of Bonn)H-Index: 27
#2Alexander O. Averianov (SPbU: Saint Petersburg State University)H-Index: 24
Last.Oliver Wings (MLU: Martin Luther University of Halle-Wittenberg)H-Index: 2
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ABSTRACTThe Late Jurassic (late Kimmeridgian) multituberculate assemblage from the Langenberg Quarry in Northern Germany includes Paulchoffatiidae indet., the pinheirodontid Teutonodon langenbergen...
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#1Achim H. Schwermann (University of Bonn)H-Index: 4
#2Kai He (KIZ: Kunming Institute of Zoology)H-Index: 1
Last.Gabriele Sansalone (UNE: University of New England (Australia))H-Index: 6
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1 CitationsSource
#1Thomas van de Kamp (KIT: Karlsruhe Institute of Technology)H-Index: 10
#2Achim H. Schwermann (University of Bonn)H-Index: 4
Last.Lars Krogmann (University of Hohenheim)H-Index: 14
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About 50% of all animal species are considered parasites. The linkage of species diversity to a parasitic lifestyle is especially evident in the insect order Hymenoptera. However, fossil evidence for host–parasitoid interactions is extremely rare, rendering hypotheses on the evolution of parasitism assumptive. Here, using high-throughput synchrotron X-ray microtomography, we examine 1510 phosphatized fly pupae from the Paleogene of France and identify 55 parasitation events by four wasp species,...
4 CitationsSource
#1Gabriele Sansalone (UNE: University of New England (Australia))H-Index: 6
#2Tassos Kotsakis (Roma Tre University)H-Index: 19
Last.Paolo Piras (Sapienza University of Rome)H-Index: 21
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The systematics of Geotrypus is among the most debated within Talpidae, but the recent development of quantitative methods for shape analyses allows us to provide a thorough reconsideration of Geotrypus spp. In the present study, we perform a systematic revision of the species Geotrypus minor from the early Oligocene of Germany using two-dimensional geometric morphometrics on the humerus, and cladistic analyses using two different character matrices. Our results suggest a distinct generic alloca...
2 CitationsSource
#1Gabriele SansaloneH-Index: 6
Last.Paolo PirasH-Index: 21
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Source
#1Achim H. Schwermann (University of Bonn)H-Index: 4
#2Tomy dos Santos Rolo (KIT: Karlsruhe Institute of Technology)H-Index: 11
Last.Thomas van de Kamp (KIT: Karlsruhe Institute of Technology)H-Index: 10
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Fossils are the preserved remains of animals, plants or other organisms. The most highly prized fossils are those that retain their original three-dimensional shape and provide details needed to identify what species it represents, and what its closest living relatives might be. However, even fossils with the most beautifully preserved external anatomy can lack the internal structures that also help to identify its evolutionary history. “Mineralized” fossils are particularly useful for researche...
7 CitationsSource
#2M. WuttkeH-Index: 1
Last.T. van de KampH-Index: 4
view all 8 authors...
3 Citations
#1Achim H. Schwermann (University of Bonn)H-Index: 4
#2Tomy dos Santos Rolo (KIT: Karlsruhe Institute of Technology)H-Index: 11
Last.Thomas van de Kamp (KIT: Karlsruhe Institute of Technology)H-Index: 10
view all 7 authors...
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#1Zbyněk Roček (CAS: Academy of Sciences of the Czech Republic)H-Index: 17
#2Renaud Boistel (University of Poitiers)H-Index: 18
Last.Tomáš Zikmund (Central European Institute of Technology)H-Index: 9
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Palaeobatrachidae are extinct frogs from Europe closely related to the Gondwanan Pipidae, which includes Xenopus. Their frontoparietal is a distinctive skeletal element which has served as a basis for establishing the genus Albionbatrachus. Because little was known about developmental and individual variation of the frontoparietal, and its usefulness in delimiting genera and species has sometimes been doubted, we investigate its structure in Palaeobatrachus and Albionbatrachus by means of X-ray ...
4 CitationsSource
#1Achim H. Schwermann (University of Bonn)H-Index: 4
#2Richard S. Thompson (University of Cambridge)H-Index: 6
ABSTRACTWe describe four exceptionally preserved Miocene talpid specimens from Germany (representing Mygalea jaegeri, Proscapanus sansaniensis, and Geotrypus montisasini), expanding and amending the original descriptions based on micro-computed tomography (μ-CT) data. These specimens are scored into an enlarged version of the Sanchez-Villagra et al. (2006) character set, along with newly collected data for extant talpids and the fossil species Geotrypus antiquus, Domninoides mimicus, Eotalpa bel...
11 CitationsSource
12