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Diversity of Pityostrobus andraei (Pinaceae) from the Belgian Wealden : morphometry and phylogeny.
De Brito, Léa; Prestianni, Cyrille
2019Young Natural History Scientists' Meeting
 

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Keywords :
Palaeobotany; Cretaceous; Pinaceae; Morphometry; Phylogeny
Abstract :
[en] In the Lower Cretaceous (145.0-100.5 Ma), important floristic changes take place. They are notably marked by a peak of diversity in conifers and more precisely in the Pinaceae family. This expansion is particularly clear among the numerous female cone fossils that are found mainly in Western Europe and North America. Exceptional deposits in the Belgian Wealden facieses (125.0 – 100.5 Ma, La Louvière, Houdeng-Aimeries), have delivered hundreds of exceptionally well preserved cones. The most represented species, Pityostrobus andraei has been studied following a traditional morphometric and geometric framework to test intra and interspecific variations. The descriptions and morphometry show that two species are included in P. andraei. A preliminary phylogenetic analysis shows paraphily of the form-genus Pityostrobus and confirms clades that are found in previous phylogenies, as well as the proximity of current Pinus species with the form genera Pityostrobus and Pseudoaraucaria. The non-metric multidimensional scaling supports the biogeographic hypothesis of a European and North American diversification. This work allows the application of statistical tests on a large fossil sample and opens doors to future comparisons with current variability. It confirms the usefulness of morphometry on this type of remains, which can be applied to other Pinaceae species found in Belgium and elsewhere in the world.
Research center :
EddyLab
Disciplines :
Life sciences: Multidisciplinary, general & others
Author, co-author :
De Brito, Léa  ;  Université de Liège - ULiège > Département de géologie > Evolution and diversity dynamics lab
Prestianni, Cyrille  ;  Université de Liège - ULiège > Département de géologie > Evolution and diversity dynamics lab
Language :
English
Title :
Diversity of Pityostrobus andraei (Pinaceae) from the Belgian Wealden : morphometry and phylogeny.
Alternative titles :
[fr] Diversité de Pityostrobus andraei (Pinaceae) du Wealdien belge : morphométrie et phylogénie.
Publication date :
19 March 2019
Number of pages :
1
Event name :
Young Natural History Scientists' Meeting
Event organizer :
Bureau des Doctorants et Etudiants du Muséum
Event place :
Paris, France
Event date :
du 12 mars 2019 au 15 mars 2019
Audience :
International
References of the abstract :
Diversity of Pityostrobus andraei (Pinaceae) from the Belgian Wealden : morphometry and phylogeny., L. De brito [et al.] (sciencesconf.org:ynhm2019:235197)
Additional URL :
Name of the research project :
Diversité, évolution et paléobiogéographie des conifères du Wealdien de Belgique (Crétacé Inférieur), application d'approches non destructruces: morphométrie et tomographie à rayons X.
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Available on ORBi :
since 16 March 2019

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