Kyphosichthys grandei Wu & Xu, 2011

Taxonomy

Kingdom: Animalia
Phylum: Chordata Haeckel 1874
Class: Actinopteri Cope 1871
Order: Kyphosichthyiformes Sun and Ni, 2017
Family: Kyphosichthyidae Sun and Ni, 2017
Genus: Kyphosichthys
Species: Kyphosichthys grandei
Author Citation Wu & Xu, 2011

Geological Time Scale

Eon: Phanerozoic
Era: Mesozoic
Period: Triassic
Sub Period: None
Epoch: Middle
International Age: Anisian (Pelsonian)

Stratigraphy

Guanling Formation

Biostratigraphy

Nicoraella kockeli Zone

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 10 cm

Location

Dawazi Village
Luoping County
Yunnan Province
China

• anisian
• dawazi
• guanling formation
• kyphosichthys
• luoping
• tff-oilshale-ch2881
• triassic

Comments

Taxonomy from Fossilworks.com.

Xu & Wu 2012, p. 112: "Etymology: The generic name is derived from kyphos (Greek), meaning bent and referring to its lumped back, and ichthys (Greek), meaning fish. The species name honors Lance Grande for his recent, valued contribution to the study of the Ginglymodi."

Emended diagnosis from Sun & Ni, 2017, p. 3: "(Possible autapomorphies marked with *). Small- to medium-sized, deep-bodied ginglymodian with a remarkable hump between head and dorsal fin (juveniles much more rounded, without the hump). A short, broad, squarish rostral bone; the dorsalmost suborbital bone(s) separating preopercle from dermopterotic bone; two anterior infraorbital bones; seven infraorbital bones between antorbital and dermosphenotic bones; infraorbital bone at the posteroventral corner of the orbit enlarged posteriad, reaching the anterior margin of the preopercle and laterally covering the quadrate; a large splint-like quadratojugal lateral to the quadrate; a short maxilla with a deep supramaxillary notch; two pairs of extrascapular bones; a rounded median gular plate. A compound first pectoral ray fused with basal and fringing fulcra; dorsal and anal fins far posteriorly located, with the insertion of dorsal fin five/six scale rows behind that of the anal fin; presence of scale-like fin rays. A complete scale row bordering the posterior margin of the dorsal body lobe, lacking additional incomplete scale rows. Scales smooth on the surface except for the anterior flank scales which are ornamented with ganoine ridges; posterior margin of scales with spare serrations. Pterygial formula of (D20-21/P7-9A16C25)T29-30."

Line drawing from Sun & Ni, 2017, p. 4:

 

References:
Xu & Wu, (2012). A deep-bodied ginglymodian fish from the Middle Triassic of eastern Yunnan Province, China, and the phylogeny of lower neopterygians. Chinese Science Bulletin, January 2012 Vol.57 No.1: 111-118.  http://www.springerl...28/fulltext.pdf
Sun, Z., & Ni, P. (2017). Revision of Kyphosichthys grandei Xu & Wu, 2012 from the Middle Triassic of Yunnan Province, South China: implications for phylogenetic interrelationships of ginglymodian fishes. Journal of Systematic Palaeontology, 16(1), 67–85. doi:10.1080/14772019.2016.1269049