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John W.M. Jagt
VU University Amsterdam
CretaceousGeologyPaleontologyCrustaceanBiology
160Publications
18H-index
1,233Citations
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Publications 170
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#1Sten L. JakobsenH-Index: 3
#2René H. B. FraaijeH-Index: 15
Last. Barry W.M. van BakelH-Index: 11
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#1Daniel Madzia (PAN: Polish Academy of Sciences)H-Index: 5
#2John W.M. JagtH-Index: 18
Last. Eric W.A. MulderH-Index: 7
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ABSTRACT Ornithopod dinosaurs were abundant inhabitants of European islands during the Late Cretaceous. The long history of dinosaur research in Europe has led to the establishment of new taxa for numerous ornithopod specimens that received considerable attention in the literature; however, many of these remain essentially unstudied. This explains why little is known of their potential phylogenetic, ecological and biogeographical importance. Here we provide a reassessment of Orthomerus dolloi, a...
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#1Johan Vellekoop (Vrije Universiteit Brussel)H-Index: 9
#2Kris H. Van Tilborgh (Katholieke Universiteit Leuven)
Last. Robert P. Speijer (Katholieke Universiteit Leuven)H-Index: 22
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Abstract Here we describe multiple pathological skeletal elements in a specimen assigned to a globidensine mosasaur as Prognathodon cf. sectorius. This individual, NHMM 2012 072, was recovered from the upper Lixhe 3 Member (Gulpen Formation, upper Maastrichtian) near Maastricht, the Netherlands. In all likelihood, it was bitten in the snout by a large, possibly conspecific mosasaur – and survived this attack. The specimen described here is among the very few with clear and unambiguous evidence o...
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#1René H. B. FraaijeH-Index: 15
Last. Petr SkupienH-Index: 7
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AbstractThe large holasteroid echinoid Hemipneustes striatoradiatus (Leske) was exploited by diverse invertebrate encrusters and borers during the Maastrichtian, both pre- and post-mortem. In life, the specimen described herein was perforated by multiple Oichnus simplex Bromley borings close to the apical system. Each engendered a growth reaction from the echinoid, a mound-like swelling on the external surface of the test with the boring at the centre. These would have been moved away from the a...
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#1John W.M. JagtH-Index: 18
#2Mart J.M. DeckersH-Index: 4
Last. Sjir RenkensH-Index: 2
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Abstract Ever since the first description of fossil material during the mid-nineteenth century, sea grass has been shown to be quite commonly preserved in ‘pockets’ or ‘clumps’ at certain levels within the Gulpen, Maastricht and Kunrade formations in southern Limburg (the Netherlands) and contiguous areas in northeast Belgium. In those places where silicification occurred during early diagenesis, even completely silicified and three-dimensionally preserved stems and roots can be found, mostly of...
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#1René H. B. FraaijeH-Index: 15
#2M. A. López-Horgue (UPV/EHU: University of the Basque Country)H-Index: 10
Last. Adiël A. Klompmaker (University of California, Berkeley)H-Index: 8
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Abstract Mid-Cretaceous (upper Albian) strata of the Basque-Cantabrian Basin in northern Spain are renowned for their highly diverse crustacean assemblages from reef settings. From the Koskobilo quarry, two small, enrolled specimens of a sphaeromatid isopod, Cymodoce (?) scopula sp. nov., and the posterior part of a carapace of a palinurid achelatan, Palaeopalinurus serratus sp. nov., are recorded. In view of the remarkably complete preservation of the isopod specimens, this example ranks amongs...
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