Elanodactylus

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Elanodactylus
Temporal range: Early Cretaceous, 124.6 Ma
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Order: Pterosauria
Suborder: Pterodactyloidea
Family: Ctenochasmatidae
Genus: Elanodactylus
Andres & Ji, 2008
Species:
E. prolatus
Binomial name
Elanodactylus prolatus
Andres & Ji, 2008

Elanodactylus (meaning "Kite finger") is a genus of ctenochasmatid pterodactyloid pterosaur from the Early Cretaceous period (early Aptian stage) of what is now the Yixian Formation of Liaoning, China.

The genus was named in 2008 by Brian Andres and Ji Qiang. The type species is Elanodactylus prolatus. The generic name is derived from the Kite genus Elanus, in reference to the long wings, and Greek daktylos, "finger", referring to the wing finger of pterosaurs. The specific name means "elongated" in Latin, in reference to the elongated middle cervical vertebrae.

It is known from a partial postcranial skeleton, holotype NGMC 99-07-1, preserving the wings, sternum, shoulder girdle, ribs, cervical and dorsal vertebrae. It represents an adult individual. In 2010, a second adult was described, specimen LPM-R00078, also a skeleton lacking the skull.[1]

The wingspan of the holotype was about 2.5 m (8.2 ft), and it is estimated to have weighed 10 kg (22 lb).[2][3]

The first phalanx of the wing finger is shorter than both the second and third phalanges, an autapomorphy.

The neck vertebrae possess exapophyses, a similarity with those of azhdarchids, long-necked giant pterosaurs most common in the Late Cretaceous. However, other skeletal material from Elanodactylus is otherwise distinct from the skeletons of azhdarchids. Andres and Ji performed a phylogenetic analysis and found that Elanodactylus was a ctenochasmatid. They postulated that ctenochasmatids and azhdarchids convergently evolved similar neck vertebrae.[2]

Classification[edit]

Below is a cladogram following a phylogenetic analysis published by paleontologists Longrich, Martill, and Andres in 2018. They recovered Elanodactylus within the family Ctenochasmatidae.[4]

Ctenochasmatidae
Ctenochasmatinae

Ctenochasma

Pterodaustrini

Pterodaustro

Beipiaopterus

Gegepterus

Kepodactylus

Moganopterinae

Moganopterus

Feilongus

Ardeadactylus

Elanodactylus

Gnathosaurinae

Huanhepterus

Plataleorhynchus

Gnathosaurus

See also[edit]

References[edit]

  1. ^ Chang-Fu Zhou, 2010, “New material of Elanodactylus prolatus Andres & Ji, 2008 (Pterosauria: Pterodactyloidea) from the Early Cretaceous Yixian Formation of western Liaoning, China”, Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 255: 277-286
  2. ^ a b Andres, B.; Ji Q. (2008). "A new pterosaur from the Liaoning Province of China, the phylogeny of the Pterodactyloidea, and convergence in their cervical vertebrae". Palaeontology. 51 (2): 453–469. doi:10.1111/j.1475-4983.2008.00761.x.
  3. ^ Paul, Gregory S. (2022). The Princeton Field Guide to Pterosaurs. Princeton University Press. p. 132. doi:10.1515/9780691232218. ISBN 9780691232218. S2CID 249332375.
  4. ^ Longrich, N.R.; Martill, D.M.; Andres, B. (2018). "Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary". PLOS Biology. 16 (3): e2001663. doi:10.1371/journal.pbio.2001663. PMC 5849296. PMID 29534059.