Bradycneme
From Ancient Greek bradys (βραδύς) meaning 'slow, ponderous' + kneme (κνήμη) meaning 'leg'; overall meaning 'ponderous leg', referring to the robust leg bone on which the genus is based.
Bradycneme is a genus of theropod dinosaur from the Upper Cretaceous-aged (Maastrichtian) Sânpetru Formation of the Hațeg Basin, Transylvania, Romania. The type species is Bradycneme draculae, known only from a partial right lower leg (specimen BMNH A1588), which its original describers believed it came from a giant owl.
Under dispute
Bradycneme rests on a single distal tibiotarsus, described as a giant owl (Harrison and Walker, 1975). Csiki and Grigorescu (1998) found it to be a non-maniraptoran tetanuran, excluded from the derived coelurosaurs by the groove on its astragalar condyles, while Naish and Dyke (2004) regard it as an indeterminate maniraptoran by its compressed distal shape.
Species
Bradycneme draculae Harrison & Walker, 1975 Nomen dubium
Type species
From Romanian 'dracul' meaning 'the dragon', a reference to the Dracula legend of Transylvania, where the fossil was found.
- Holotype
- BMNH A1588 , Natural History Museum
- Material
- Distal end of a right tibiotarsus.
- Horizon
- Sânpetru Formation, Maastrichtian, Late Cretaceous , 72.2–66.0 million years ago
- Locality
- Sânpetru, Hunedoara, Romania Harrison and Walker (1975) give the locality as "Szèntpeterfalva, Hàtszeg", the Hungarian name of Sânpetru, and no formation. Csiki and Grigorescu (1998) place the material in the Sânpetru Formation of the Sibișel Valley on a personal communication, adding that "no further details are known about their precise locality".
References
-
Harrison, C. J. O.; Walker, C. A. (1975). The Bradycnemidae, a new family of owls from the Upper Cretaceous of Romania. Palaeontology 18(3): 563-570. doi:10.5281/zenodo.16385950
Named Bradycneme draculae for the distal end of a right tibiotarsus, BMNH A 1588, as a giant owl.
harrison1975a -
Csiki, Z.; Grigorescu, D. (1998). Small theropods from the Late Cretaceous of the Hateg Basin (western Romania): an unexpected diversity at the top of the food chain. Oryctos 1: 87-104. Musée des Dinosaures d'Espéraza.
Treats the tibiotarsus as a non-maniraptoran tetanuran, keeps the name only informally, and places the bones in the Sânpetru Formation.
csiki1998a -
Naish, D.; Dyke, G. J. (2004). Heptasteornis was no ornithomimid, troodontid, dromaeosaurid or owl: the first alvarezsaurid (Dinosauria: Theropoda) from Europe. Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 2004(7): 385-401.
Classified Bradycneme as an indeterminate maniraptoran; the alvarezsaurid referral in that paper applies to Heptasteornis, not Bradycneme.
naish2004b -
Jones, B. (2026). The Princeton Encyclopedia of Dinosaurs: Theropods. Princeton University Press.
Reports Bradycneme with Heptasteornis as possible alvarezsaurids.
jones2026c -
Osmólska, H. (1987). Borogovia gracilicrus gen. et sp. n., a new troodontid dinosaur from the Late Cretaceous of Mongolia. Acta Palaeontologica Polonica 32(1-2): 133-150.
Held that Bradycneme cannot be considered valid, since troodontid distal tibiotarsi are too alike to diagnose.
osmólska1987a -
Olshevsky, G. (1991). A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia. Mesozoic Meanderings 2: 1-196.
Lists Bradycneme draculae as a nomen dubium.
olshevsky1991a -
Makovicky, P. J.; Norell, M. A. (2004). Troodontidae. The Dinosauria, Second Edition (Weishampel, D. B.; Dodson, P.; Osmólska, H., eds.) 184-195. University of California Press, Berkeley.
Listed Bradycneme draculae among the nomina dubia of Troodontidae.
makovicky2004b