Redescription of Liberonautes chaperi (A. Milne-Edwards, 1887) n. comb. (Brachyura, Potamonautidae) from Ivory Coast and Ghana

1985 ◽  
Vol 63 (11) ◽  
pp. 2703-2706 ◽  
Author(s):  
Neil Cumberlidge

Liberonautes chaperi (A. Milne-Edwards, 1887) n. comb. is redescribed from the holotype from Ivory Coast and from new material from Ghana. The present study introduces 12 newly discovered specimens, including 4 males, from the collection of the British Museum (Natural History), London. New evidence from comparisons of gonopod structure leads to a suggested reassignment of this species to the genus Liberonautes Bott, 1955. A key to distinguish between the species of the genus Liberonautes is provided.

1981 ◽  
Vol 27 ◽  
pp. 45-82 ◽  

Geoffrey Blackman was born on 17 April 1903 at Scarsdale Villas, Kensington. His father, Vernon Herbert Blackman (elected F.R.S. in 1913), was then an assistant in the Mycological section of the British Museum (Natural History) where he was responsible for the collections of fungi and the accession of new material. His mother, Edith Delta née Emett, who came from a Gloucestershire family, was at the time of her marriage engaged in preparing wax models of biological subjects for the museum. Sir Ray Lankester sent her to see Blackman for advice on the scientific accuracy of her work, and they married in 1901


Professor Teilhard de Chardin (1927)* has called attention to the need of a revision of the British specimens of the genus Hyracotherium . As far back as the year 1901, Depéret also made a statement that there exist “interprétations diverses et parfois inexactes relativement aux charactères au limites des genres,” and that “ces divergences provenaient soit d’une fausse interprétation des types, soit de l’état encore incomplet des documents sur quelques-unes de ces formes animales.” The present account of the very few known English specimens of Hyracotherium has been undertaken in an endeavour to fulfil Professor Teilhard de Chardin’s request and, further, to record details of a specimen in the collection of the Sedgwick Museum at Cambridge and some new material recently acquired by the British Museum (Natural History), none of which has been so far described.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Federico J. Degrange ◽  
Diego Pol ◽  
Pablo Puerta ◽  
Peter Wilf

AbstractHere we present the first record of a stem-Coracii outside the Holarctic region, found in the early Eocene of Patagonia at the Laguna del Hunco locality. Ueekenkcoracias tambussiae gen. et sp. nov. consists of an incomplete right hind limb that presents the following combination of characters, characteristic of Coracii: relatively short and stout tibiotarsus, poorly developed crista cnemialis cranialis, short and wide tarsometatarsus, with the tuberositas m. tibialis cranialis located medially on the shaft, and curved and stout ungual phalanges. Although the presence of a rounded and conspicuous foramen vasculare distale and the trochlea metatarsi II strongly deflected medially resemble Primobucconidae, a fossil group only found in the Eocene of Europe and North America, our phylogenetic analysis indicates the new taxon is the basalmost known Coracii. The unexpected presence of a stem-Coracii in the Eocene of South America indicates that this clade had a more widespread distribution than previously hypothesized, already extending into the Southern Hemisphere by the early Eocene. Ueekenkcoracias tambussiae represents new evidence of the increasing diversity of stem lineages of birds in the Eocene. The new material provides novel morphological data for understanding the evolutionary origin and radiation of rollers and important data for estimates of the divergence time of the group.


Sign in / Sign up

Export Citation Format

Share Document