Hoeckosaurus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Dibamia

Familia: Dibamidae
Genus: †Hoeckosaurus
Species: †H. mongoliensis
Name

†Hoeckosaurus Čerňanský, 2019: 784

Type species: †Hoeckosaurus mongoliensis Čerňanský, 2019, by original designation and monotypy.

References
Primary references

Čerňanský, A. 2019. The first potential fossil record of a dibamid reptile (Squamata: Dibamidae): a new taxon from the early Oligocene of Central Mongolia. Zoological Journal of the Linnean Society 187(3): 782–799. DOI: 10.1093/zoolinnean/zlz047 Open access Reference page.

Hoeckosaurus is an extinct genus of lizard from the Oligocene of Mongolia. It contains a single species, H. mongoliensis. The genus name commemorates Austrian paleontologist Gudrun Höck, who collected the type material.[1][2]

Hoeckosaurus was a member of the Dibamidae (a family of primitive legless squamates), and represents the only known fossil record of the Dibamidae, despite the presumed ancient origins of the group. Despite the close resemblance of the fossils to extant dibamids in the genera Dibamus and Anelytropsis, some distinguishing features such as an open Meckelian groove suggests that Hoeckosaurus is basal to both.[1]

The remains of Hoeckosaurus consist of some jawbones, and were collected in 1995-1997 from the Valley of the Lakes in central Mongolia. The sediments they were collected from are thought to be Early Oligocene in age. Previous studies postulated the jaws as belonging to an arretosaurid (an extinct family of Asian iguanians) or an amphisbaenian. However, a 2019 study identified the jaws as most closely resembling those of a dibamid, and assigned them to a new genus, Hoeckosaurus.[1]
References

Čerňanský, Andrej (2019-08-13). "The first potential fossil record of a dibamid reptile (Squamata: Dibamidae): a new taxon from the early Oligocene of Central Mongolia". Zoological Journal of the Linnean Society. 187 (3): 782–799. doi:10.1093/zoolinnean/zlz047. ISSN 0024-4082.
"Mindat.org". www.mindat.org. Retrieved 2022-10-29.