Louwoichthys pusillus, Xu, 2021
publication ID |
A36D3168-02CE-4D98-BF42-5ED7B61D4F47 |
publication LSID |
lsid:zoobank.org:pub:A36D3168-02CE-4D98-BF42-5ED7B61D4F47 |
persistent identifier |
https://treatment.plazi.org/id/03C687FC-FF9E-FFC7-FC2A-7491FDBACD29 |
treatment provided by |
Felipe |
scientific name |
Louwoichthys pusillus |
status |
sp. nov. |
LOUWOICHTHYS PUSILLUS SP. NOV.
( FIGS 1–10)
l s i d: u r n: l s i d: z o o b a n k. o r g: a c t: F 7 4 8 4 A 7 6 - 36E2-43A9-81FB-5BC7B4BCF938
Etymology: The epithet is the Latin word pusillus , very little or petty, referring to the small size of the fish body.
Holotype: IVPP V 20421 View Materials , a nearly complete, laterally compressed specimen from Luoping.
Referred material: IVPP V 20422 View Materials –20425, 22943, 22944, 22946, 22947, 22956–22958 from Luoping, and IVPP V 20597 View Materials and 25558 from Luxi, Yunnan.
Locality and horizon: Luoping and Luxi, Yunnan, China; Second (Upper) Member of Guanling Formation, Pelsonian (~244 Mya), Anisian, Middle Triassic ( Zhang et al., 2009; Huang et al., 2013).
Diagnosis: A small-sized louwoichthyid distinguished from other genera of this family by the following features: skull roofing bones tending to be fused into a single plate; most cranial bones (except small regions of frontal, maxilla and preopercle) with smooth surface (*); ratio of frontal/parietal length being 2.5 (*); anterior infraorbital portion of maxilla relatively dorsoventrally short; two pairs of branchiostegal rays; eight or nine principal dorsal rays; seven or eight principal anal rays; 18–20 principal caudal rays; scales with smooth surface; and pterygial formula of D19/ P10–11, A16–18, C28–29/T31–32 (*).
DESCRIPTION
IVPP |
Institute of Vertebrate Paleontology and Paleoanthropology |
V |
Royal British Columbia Museum - Herbarium |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.