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Article Reference ECMAScript program Morphological disparity of extant and extinct pinaceous ovulate cones: How many cones are enough?
Premise The expansion of Pinaceae during the Cretaceous is exemplified by the numerous ovulate cone taxa found in western Europe and North America. The Belgian Wealden facies deposits have delivered hundreds of exceptionally well-preserved yet isolated pinaceous ovulate cones; these cones were placed by convention within form-genera. Ten species have been described in Belgium, representing about 20% of the known fossil record of this period. However, the validity of these taxa is questionable because their intra- and interspecific variabilities have never been thoroughly studied. Moreover, quantifying the expansion of Pinaceae in terms of morphospace occupation is desirable to reveal the dynamics of this critical radiation. Methods We used linear and geometric morphometry to quantify the shape of the extensive sample of Cretaceous cones of Belgium. These methods were also applied to extant pinaceous species to compare the morphological disparity of Cretaceous assemblages against those of today in selected ecosystems. We used ordination methods (PCA) to visualize morphospace occupation and test for species delineation. Results The morphological disparity was not higher in fossil species than in extant species we sampled. Both morphological approaches confirmed that the species Pityostrobus andraei presents high morphological variability. Our resampling tests indicate that ovulate cone morphological variability can be satisfactorily quantified with as few as 15 specimens. Conclusions The methodology used here is relevant for quantifying both the variability and the diversity of many fossil assemblages, paving the way for a more robust evaluation of Cretaceous pinaceous diversity.
Located in Library / RBINS Staff Publications 2022
Article Reference Flabellopteris lococannensis gen. et sp. nov.: A new fern-like plant from the Famennian of South Africa
A new fossil plant, Flabellopteris lococannensis Gess and Prestianni gen. et sp. nov., is described from the Famennian of South Africa. This plant is interpreted as monopodial in habit with a first order axis that only occasionally dichotomizes. The lateral organs (both branches and appendages) are borne spirally on all branching orders and a 1/3 organotaxy is suggested. The first order axes bear both second order axes and fertile appendages at the same nodes. Axes of the second and third branching orders bear appendages made of several isotomous dichotomies. Recurved paired sporangia are borne on dichotomizing appendages that are like the vegetative appendages. The plant bears some similarity to the Iridopteridales but also to the Late Devonian Rhacophytales and to the Lower Carboniferous fernlike plant Chlidanophyton dublinensis. The architecture of the plant is briefly discussed and its implication on the evolution of the frond is considered.
Located in Library / RBINS Staff Publications 2022
Article Reference New hyaenodonta (Mammalia) from the middle Eocene of Myanmar
The middle Eocene Pondaung Formation in Myanmar has yielded a rich mammalian faunaincluding several Primate taxa. Hyaenodonta are known by the genera Kyawdawia, Yarshea,Orienspterodon, and two other indeterminate taxa. We describe here new material of Kyaw-dawia, including some morphological details, a new species of the hypercarnivorous genusPropterodon and an indeterminate species, different from those described earlier in Myan-mar, and characterized by a reduction of m3 and would belong to a third lineage with thesame evolutionary trend as Galecyon and the Limnocyoninae. The hyainailourines (Orien-spterodon) and hyaenodontines (Propterodon) are recorded for the first time in SoutheastAsia and these subfamilies appeared in quasi the same time in Europe illustrating probablya profound change in the carnivorous fauna among Laurasia.
Located in Library / RBINS Staff Publications 2018
Article Reference Molecular Identification of an Invasive Sarotherodon Species from the Atchakpa Freshwater Reservoir (Ouémé River Basin, Benin) and Comparison within S. melanotheron Using COI Markers
Located in Library / RBINS Staff Publications 2021 OA
Article Reference Assessment of exploited fish species in the Lake Edward System, East Africa
Located in Library / RBINS Staff Publications 2021
Article Reference African lates perches (Teleostei, Latidae, Lates): Paraphyly of Nile perch and recent colonization of Lake Tanganyika
Located in Library / RBINS Staff Publications 2021
Article Reference Testing for hybridization between Nile tilapia (Oreochromis niloticus) and blue spotted tilapia (Oreochromis leucostictus) in the Lake Edward system
Located in Library / RBINS Staff Publications 2021
Article Reference Diving into the unknown: fourteen new species of haplosclerid sponges (Demospongiae: Haplosclerida) revealed along the Peruvian coast (Southeastern Pacific)
Located in Library / RBINS Staff Publications 2022
Article Reference The Lanternfly genus Polydictya (Hemiptera: Fulgoromorpha: Fulgoridae) from Sulawesi and neighbouring islands, with the description of three new species
Located in Library / RBINS Staff Publications
Article Reference Results of ant collections on Santa Cruz Island within the framework of the 2012 Global Taxonomy Initiative Ant Course at Galapagos (Hymenoptera: Formicidae)
Located in Library / RBINS Staff Publications