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Luoxiongichthys hyperdorsalis Wen et al., 2011
oilshale posted a gallery image in Member Collections
From the album: Vertebrates
Luoxiongichthys hyperdorsalis Wen et al., 2011 Middle Triassic Anisian, Pelsonian Guanling Formation Daaozi, Luoxiong Luoping County Yunnan China Lit.: W. Wen, Q. Y. Zhang, C. Y. Zhou, J. Y. Huang, Z. Q. Chen and M. J. Benton. 2012. A new genus of basal actinopterygian fish from the Anisian (Middle Triassic) of Luoping, Yunnan Province, Southwest China. Acta Palaeontologica Polonica 57:149-160- 5 comments
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- luoxiongichthys
- triassic
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Taxonomy from Fossilworks.org. Diagnosis from Wen et al. 2012. p. 152: "Middle−sized fishes, laterally compressed. The outline is triangular, with the apex of the triangle formed by a pointed “hump” in the dorsal region. Opercular series com− prising opercle, subopercle, interopercle, and preopercle; subopercular has long ramus anterior to opercular; suboper− cular a little less than half the size of the opercular; preopercular almost vertically oriented, with slender dorsal limb; three square−like suborbitals; at least eight branchiostegal rays with tubercles on the surface and comb−like ornament on their anterior margin; strong lower jaw has coronoid pro− cess; pointed grasping teeth in upper jaw, lower jaw, para− sphenoid and entopterygoid; articulation of jaw immediately below posterior margin of orbit; cleithrum is strong, with ridge ornament on surface of upper part; supracleithrum is large, nearly half the depth of the cleithrum, the lower end is somewhat pointed; two postcleithra lie behind the cleithrum; clavicle present; hemiheterocercal tail slightly forked; each radial supports one lepidotrichium in unpaired fins; all rays segmented from middle part and bifurcated distally; fringing fulcra on anterior margin of all fins; enlarged fulcra before anal fin and caudal fin; the whole body is covered with ganoid scales with tuberculate ornament; scales contact each other by peg−and−socket structure." Line drawing by Wen et al., p. 152: Identified by oilshale using Wen et al. 2002. References: W. Wen, Q. Y. Zhang, C. Y. Zhou, J. Y. Huang, Z. Q. Chen and M. J. Benton. (2012) A new genus of basal actinopterygian fish from the Anisian (Middle Triassic) of Luoping, Yunnan Province, Southwest China. Acta Palaeontologica Polonica 57:149-160. Sun, Z. Y. and Ni, P. G. (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 16:67-85.
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- luoxiongichthys
- luoping
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