Ctenochasmatidae

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(Redirected from Gnathosaurinae)

Ctenochasmatids
Temporal range:
Late Jurassic - Early Cretaceous 160–105 Ma
Ctenochasma elegans 1.jpg
Cast of a Ctenochasma elegans specimen
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Order: Pterosauria
Suborder: Pterodactyloidea
Clade: Ctenochasmatoidea
Family: Ctenochasmatidae
Nopsca, 1928
Type species
Ctenochasma roemeri
Meyer, 1852
Subgroups
Ctenochasmatid skulls demonstrating suspension feeding characteristics

Ctenochasmatidae is a group of pterosaurs within the suborder Pterodactyloidea. They are characterized by their distinctive teeth, which are thought to have been used for filter-feeding. Ctenochasmatids lived from the Late Jurassic to the Early Cretaceous periods.

The earliest known ctenochasmatid remains date to the Late Jurassic Oxfordian age. Previously, a fossil jaw recovered from the Middle Jurassic Stonesfield Slate formation in the United Kingdom, was considered the oldest known. This specimen supposedly represented a member of the family Ctenochasmatidae,[1] though further examination suggested it actually belonged to a teleosaurid stem-crocodilian instead of a pterosaur.[2]

Classification[edit]

Below is cladogram following a topology recovered by Brian Andres, using the most recent iteration of his data set (Andres, 2021). Anders found that three subfamilies fall within the Ctenochasmatidae: Ctenochasmatinae, Gnathosaurinae and Moganopterinae, while also including several basal genera.[3]

 Ctenochasmatidae 
 Ctenochasmatinae 

"Pterodactylus" micronyx

Liaodactylus

Ctenochasma

 Pterodaustrini 

Pterodaustro

Beipiaopterus

Gegepterus

Kepodactylus

Elanodactylus

 Moganopterinae 

Feilongus

Moganopterus

Ardeadactylus

 Gnathosaurinae 

Huanhepterus

Plataleorhynchus

Gnathosaurus

References[edit]

  1. ^ Buffetaut, E. and Jeffrey, P. (2012). "A ctenochasmatid pterosaur from the Stonesfield Slate (Bathonian, Middle Jurassic) of Oxfordshire, England." Geological Magazine, (advance online publication) doi:10.1017/S0016756811001154
  2. ^ Andres, B.; Clark, J.; Xu, X. (2014). "The Earliest Pterodactyloid and the Origin of the Group". Current Biology. 24 (9): 1011–6. doi:10.1016/j.cub.2014.03.030. PMID 24768054.
  3. ^ Andres, B. (2021) Phylogenetic systematics of Quetzalcoatlus Lawson 1975 (Pterodactyloidea: Azhdarchoidea). Journal of Vertebrate Paleontology, 41:sup1, 203-217. DOI: 10.1080/02724634.2020.1801703 https://www.tandfonline.com/doi/full/10.1080/02724634.2020.1801703