Hallensia Franzen & Haubold 1986
Authors/Creators
- 1. Muséum national d'Histoire naturelle, Centre de Recherche en Paléontologie – Paris (CR 2 P, UMR 7207), CNRS / MNHN / Sorbonne Université, case postale 38, 57 rue Cuvier, F- 75231 Paris cedex 05 (France)
Description
Hallensia Franzen & Haubold, 1986: 37.
TYPE SPECIES. — Hallensia matthesi Franzen & Haubold, 1986 by original designation.
INCLUDED SPECIES. — Hallensia parisiensis, Franzen, 1990; Hallensia louisi, Hooker, 1994.
EMENDED DIAGNOSIS. — Perissodactyl of medium size (basicranium length: 175 mm) with brachyodont and bunolophodont dentition. Dental formula 3.1.4.3/3.1.4.3. Nasal incisure extending at the posterior border of the I3 alveolus. Upper molars with or without mesostyle and without postprotocrista. Strong cingula on upper molars. M3 with strong hypocone. Upper and lower M3 larger than M2. Lower molars without paraconid. Hypoconulid of m3 relatively large.
COMMENT
Hallensia is a perissodactyl with a very characteristic morphology. This primitive morphology pushed Franzen & Haubold (1986) to classify it within the phenacodontid condylarths. The discovery of a complete skeleton of H. matthesi in Messel (Germany) indicates that it is a perissodactyl (Franzen 1990), mostly because of the saddle-shaped navicular facet of its astragalus, a synapomorphic feature of perissodactyls (Radinsky 1966).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Franzen & Haubold
- Kingdom
- Animalia
- Phylum
- Chordata
- Order
- Perissodactyla
- Family
- Lophialetidae
- Genus
- Hallensia
- Taxon rank
- genus
- Taxonomic concept label
- Hallensia Franzen, 1986 sec. Bronnert & Métais, 2023
References
- FRANZEN J. L. & HAUBOLD H. 1986. - The middle Eocene of European mammalian stratigraphy. Definition of the Geiseltalian. Modern Geology 10 (2 - 3): 159 - 170.
- FRANZEN J. L. 1990. - Hallensia (Mammalia, Perissodactyla) aus Messel und dem Pariser Becken sowie Nachtrage aus dem Geiseltal. Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre 60: 175 - 201. http: // pascal-francis. inist. fr / vibad / index. php? action = getRecordDetail & idt = 19633641
- HOOKER J. J. 1994. - The beginning of the equoid radiation. Zoological Journal of the Linnean Society 112: 29 - 63. https: // doi. org / 10.1111 / j. 1096 - 3642.1994. tb 00311. x
- RADINSKY L. B. 1966. - The adaptive radiation of the phenacodontid condylarths and the origin of the Perissodactyla. Evolution 20 (3): 408 - 417. https: // doi. org / 10.2307 / 2406639