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Koen Stein
Vrije Universiteit Brussel
AnatomyCretaceousPaleontologyOntogenyBiology
26Publications
11H-index
550Citations
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Publications 26
Newest
#1Benjamin Jentgen (University of Liège)H-Index: 1
#2Koen Stein (Vrije Universiteit Brussel)H-Index: 11
Last. Valentin Fischer (University of Liège)H-Index: 16
view all 3 authors...
#1Benjamin Jentgen-Ceschino (Vrije Universiteit Brussel)H-Index: 1
#2Koen Stein (Vrije Universiteit Brussel)H-Index: 11
Last. Valentin Fischer (University of Liège)H-Index: 16
view all 3 authors...
The histology of sauropod long bones often appears uniform and conservative along their evolutionary tree. One of the main aspects of their bone histology is to exhibit a fibrolamellar complex in t...
Source
#1Koen Stein (Vrije Universiteit Brussel)H-Index: 11
#2Edina Prondvai (UGent: Ghent University)H-Index: 11
Last. Robert R. Reisz (NCHU: National Chung Hsing University)H-Index: 39
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One of the fossil record’s most puzzling features is the absence of preserved eggs or eggshell for the first third of the known 315 million year history of amniote evolution. Our meagre understanding of the origin and evolution of calcareous eggshell and amniotic eggs in general, is largely based on Middle Jurassic to Late Cretaceous fossils. For dinosaurs, the most parsimonious inference yields a thick, hard shelled egg, so richly represented in the Late Cretaceous fossil record. Here, we show ...
1 CitationsSource
#1Jasmina Wiemann (Yale University)H-Index: 4
#2Matteo Fabbri (Yale University)H-Index: 7
Last. Derek E. G. Briggs (Yale University)H-Index: 68
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Vertebrate hard tissues consist of mineral crystallites within a proteinaceous scaffold that normally degrades post-mortem. Here we show, however, that decalcification of Mesozoic hard tissues preserved in oxidative settings releases brownish stained extracellular matrix, cells, blood vessels, and nerve projections. Raman Microspectroscopy shows that these fossil soft tissues are a product of diagenetic transformation to Advanced Glycoxidation and Lipoxidation End Products, a class of N-heterocy...
10 CitationsSource
#1Verónica Díez Díaz (Humboldt University of Berlin)H-Index: 8
#2Géraldine Garcia (University of Poitiers)H-Index: 15
Last. Xavier Valentin (University of Poitiers)H-Index: 15
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Abstract New remains of the titanosaurian sauropod Atsinganosaurus velauciensis from its Upper Cretaceous type horizon and type locality in Velaux-La Bastide Neuve (Bouches-du-Rhone Department, Provence) in southern France are described. This locality is considered to be upper Campanian (Argiles et Gres a Reptiles Formation, Aix-en-Provence Basin). The new material consists of skull fragments, including a partial braincase, isolated teeth, elements of the axial skeleton (cervical, dorsal and cau...
4 CitationsSource
#1Benjamin Jentgen (University of Liège)H-Index: 1
#2Koen Stein (Vrije Universiteit Brussel)H-Index: 11
Last. Valentin Fischer (University of Liège)H-Index: 16
view all 6 authors...
#1Wessel van der VosH-Index: 2
#2Koen SteinH-Index: 11
Last. Constanze BickelmannH-Index: 5
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2 CitationsSource
#1Andrea CauH-Index: 16
#2Vincent BeyrandH-Index: 3
Last. Pascal GodefroitH-Index: 28
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The recently discovered theropod Halszkaraptor escuillei reveals a novel basal dromaeosaurid clade, and its adaptations that suggest a semi-aquatic predatory lifestyle add an additional ecomorphology to those developed by non-avian maniraptorans.
16 CitationsSource
#1Pascal Godefroit (Royal Belgian Institute of Natural Sciences)H-Index: 28
#2Géraldine Garcia (University of Poitiers)H-Index: 15
Last. Xavier Valentin (University of Poitiers)H-Index: 15
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Rhabdodontidae is a successful clade of ornithopod dinosaurs, characteristic of Late Cretaceous continental faunas in Europe. A new rhabdodontid from the late Campanian, of southern France, Matheronodon provincialis gen. et sp. nov., is characterized by the extreme enlargement of both its maxillary and dentary teeth, correlated to a drastic reduction in the number of maxillary teeth (4 per generation in MMS/VBN-02-102). The interalveolar septa on the maxilla are alternately present or resorbed v...
6 CitationsSource
#1Benjamin Jentgen (University of Liège)H-Index: 1
#2Koen Stein (Vrije Universiteit Brussel)H-Index: 11
Last. Valentin Fischer (University of Liège)H-Index: 16
view all 3 authors...
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