Tungtingichthys gracilis Liu, Liu et Tang 1962

By oilshale

• May 7, 2022

Taxonomy

Kingdom: Animalia
Phylum: Chordata
Class: Actinopteri Cope 1871
Order: Perciformes Stirton 1953
Family: incertae sedis
Genus: Tungtingichthys
Species: Tungtingichthys gracilis
Author Citation Liu, Liu et Tang 1962

Geological Time Scale

Eon: Phanerozoic
Era: Cenozoic
Period: Paleogene
Sub Period: None
Epoch: Eocene

Stratigraphy

Xiejiashan Formation

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 6 cm

Location

Sanbanqiao Village
Linli County
Hunan Province
China

• eocene
• hunan
• linli
• sanbanqiao
• tff-oilshale-ch565
• tungtingichthys

Comments

Taxonomy from Fossilworks.org.

Revised diagnosis (genus) from CHANG & LIU, 1998 , p. 190: "Small fish with relatively low body depth, laterally compressed, known maximum standard length 63 mm, body depth consisting 27%— 38% of standard length; upper margin of supraoccipital crest thickened, supraoccipital shelf present; orbit comparative large, its diameter longer than antorbital distance, mouth terminal or slightly supraterminal, mouth margin of premaxilla and dentary covered by fine teeth, premaxilla with ascending and articular processes, tiny supramaxilla present, palatine with small teeth; opercular with one spine, preopercular finely serrated posteriorly while its ventral margin with fewer and broader serrations; branchiostegal rays 6; ventral margin of lachrymal prominently serrated; upper and lower pharyngeals with molariform teeth; spine part of dorsal fin continuous with soft-ray part, base of former longer than that of latter, dorsal margin slightly notched between two parts, last spine longer than preceding one, D VIII—X, 8—11; predorsal formula in T. gracilis 0/0/ 0+1/, in T. hsiawanpuensis 0/0/0+2/; A III, 7—9; P 13—15; V I, S, caudal fin slightly forked, PU; fused with U₁, no independent U₂; hypurals 5, uroneurals 2, anterior portion of UN₁ enlarged to form stegural, epurals 3, neural spine on PU₂: in most of specimens short, in very few specimens long; vertebrae 24—25; scales on body ctenoid, posterior portion of skull roof and cheek covered with cycloid or ctenoid scales."

Line drawing from CHANG & LIU, 1998, p. 175:

Identified by oilshale.

References:
Liu, T, Liu, H. Tang, X. (1962) A new percoid fish from South China. Vert. PalAsiat., 6 (2): 121-129.
Chang, M. M. & Liu, H. (1998) Reexamination of Tungtingichthys (Pisces, Perciformes) from Hunan Province, China. Vert. PalAsiat., 36(3): 173-196, figs. 1-6, pls. I-II.