Morphotype b
Authors/Creators
- 1. CR 2 P (CNRS, MNHN, Sorbonne Université), Département Origines et Évolution, Muséum national d'Histoire naturelle, case postale 38, 57 rue Cuvier, F- 75231 Paris cedex 05 (France)
- 2. Evolution & Diversity Dynamics Lab, Université de Liège (ULiège), Quartier Agora, Bâtiment B 18, Allée du six août, 14, 4000 Liège (Belgium)
- 3. KU Leuven, Department of Earth and Environmental Sciences, Celestijnenlaan 200 E, B- 3001 Leuven-Heverlee (Belgium)
- 4. Directorate Earth and History of Life, Palaeobiosphere Evolution Research Unit, Royal Belgian Institute of Natural Sciences, Rue Vautier 29, B- 1000 Brussels (Belgium)
Description
Morphotype B
(Fig. 4 F-J)Dorsal view
The sagittal groove is rather visible. The tuber calcanei is proximodistally quite elongated. The ectal facet is more inclined relative to the proximodistal axis than in other morphotypes, as well as in Cynodictis lacustris. It is strongly convex in the middle and very slightly concave in its proximal part. The edges of this facet are rather well pronounced, except the distal edge, which merges with the body of the calcaneus and is therefore difficult to delimit. The sustentacular facet is rounded and extends slightly on the proximal edge of the sustentaculum tali. It is placed more proximal on the body of the calcaneus than in the other two calcaneal morphotypes. The peroneal process and its proximal and distal edges are quite well defined. The cuboid facet is inclined with respect to the mediolateral axis and its lateral edge rises over the body of the calcaneus. The plantar tubercle is distally very long and clearly visible in dorsal view. It is longer than that of Cynodictis lacustris.
Lateral view
The dorsal and ventral edges of the tuber calcanei are very slightly concave. The cavity, proximal to the ectal facet, is deep and positioned higher on the tuber than in Morphotype A.
Medial view
The tendinous plantar groove is quite excavated.
Distal view
The cuboid facet is smaller than in Morphotype A. The plantar tubercle is ventrally quite broad. The edge separating these two structures is not very clear.
Proximal view
The proximal part of the tuber calcanei has a rather oval surface that is slightly dorsoventrally elongated.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Kingdom
- Animalia
- Phylum
- Chordata
- Order
- Carnivora
- Family
- Amphicyonidae
- Genus
- Morphotype b
- Taxon rank
- genus