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Dalinghosaurus longidigitus
Taxonomy
Dalinghosaurus longidigitus was named by Ji (1998). It is not extant. Its type specimen is GMV 2127, a set of postcrania (posterior part of the body (tail, pelvis, and hind limbs)). Its type locality is Sihetun, lower Yixian (general), which is in a Barremian/Aptian lacustrine shale/siltstone in the Yixian Formation of China.
Synonymy list
| Year | Name and author |
|---|---|
| 1998 | Dalinghosaurus longidigitus Ji |
| 2004 | Dalinghosaurus longidigitus Ji and Ji p. 899 |
| 2005 | Dalinghosaurus longidigitus Evans and Wang p. 726 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Dalinghosaurus longidigitus Ji 1998
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. E. Evans and Y. Wang 2005 | A lizard with small adult size (c. 150 mm snout−pelvis length) distinguished from most Mesozoic lizards but resembling carusioids (sensu Gao and Norell 1998) in the following combination of derived characters: pustulate sculpture on dermal skull bones (mature adult); maxillary facial process narrow dorsally and inturned medially; frontals fused, with deep cristae cranii and orbital constriction; parietal foramen within parietal but close to anterior margin; jugal large with tall postorbital ramus that meets squamosal and bears pustulate sculpture. Dalinghosaurus resembles the Late Cretaceous Carusia (Borsuk−Białynicka 1985; Gao and Norell 1998) in the strong development and pattern of the skull ornamentation (double interorbital row of large pustules that diverge posteriorly along the orbital margin), the loss/fusion of the lacrimal, and the presence of a small coronoid notch on the rear of the dentary, but differs in dental structure (tightly packed teeth in Carusia, fewer conical teeth in Dalinghosaurus) and in having a longer snout; it resembles Shinisaurus, but differs from Carusia and Xenosaurus, in having an anteriorly extended prefrontal that separates the maxilla from the nasal, and differs from all three in the posterior extension of the nares and the possession of a strongly flared angular flange on the lower jaw. The postcranial skeleton of Carusia is unknown, but Dalinghosaurus differs from both Xenosaurus and Shinisaurus (and from most Mesozoic lizards except the Upper Jurassic Bavarisaurus, Evans 1984a) in having a pes that is equal in length to the femur and tibia combined |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Late/Upper Barremian to the top of the Early/Lower Aptian or 130.00000 to 122.46000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Barremian - Early/Lower Aptian | China (Liaoning) | Dalinghosaurus longidigitus (13937 type locality: 52888 53493 117415) |