The discovery of heterotidinae (Teleostei: Osteoglossidae) from the paleocene Paskapoo formation of Alberta, Canada

IVPP-IR > 中科院古脊椎所（2000年以后）

	The discovery of heterotidinae (Teleostei: Osteoglossidae) from the paleocene Paskapoo formation of Alberta, Canada
	Li, GQ; Wilson, MVH; Li, GQ (reprint author), UNIV ALBERTA, DEPT BIOL SCI, EDMONTON, AB T6G 2E9, CANADA.
	1996-06-01
发表期刊	JOURNAL OF VERTEBRATE PALEONTOLOGY
ISSN	0272-4634
卷号	16 期号:2 页码:198-209
文章类型	Article
摘要	A new fossil genus of Osteoglossidae, named dagger Joffrichthys gen. nov., is described based mainly on three articulated specimens from the Paskapoo Formation of central Alberta, Canada. This discovery suggests the occurrence of Heterotidinae in the Paleocene of western North America. The inclusion of dagger Joffrichthys gen. nov. in the Heterotidinae is supported by at least four synapomorphies: maxilla posteriorly lying on dentary part of lower jaw, horizontal arm of preopercle about as long as vertical arm, a large, irregularly wide, and trapezoidal io2, and approximately equal-sized dorsal and anal fins. The presumed dagger Sinoglossus-Scleropages-Osteoglossum relationship is not supported. This paper recognizes a Heterotidinae relationship of dagger Sinoglossus based on shared derived character slates. Three features (io1 used with antorbital. a typical ''cheek wall'' formed by io1 to io3 and covering all the area below the orbit from the antorbital to the anterior edge of the preopercle, and reticulate scales) even suggest that the eastern Asian Eocene-Oligocene dagger Sinoglossus is probably sister to the clade consisting of Heterotis and Arapaina. Two Late Jurassic and/or Early Cretaceous eastern Asian teleosts (dagger Huashia and dagger Kuntulunia) and one mid-Cretaceous South American primitive osteoglosso-morph (dagger Laeliichthys) might have some relationship with the ancestral lineages of Heterotidinae. However, evidence remains inconclusive about the early evolution of Heterotidinae.; A new fossil genus of Osteoglossidae, named dagger Joffrichthys gen. nov., is described based mainly on three articulated specimens from the Paskapoo Formation of central Alberta, Canada. This discovery suggests the occurrence of Heterotidinae in the Paleocene of western North America. The inclusion of dagger Joffrichthys gen. nov. in the Heterotidinae is supported by at least four synapomorphies: maxilla posteriorly lying on dentary part of lower jaw, horizontal arm of preopercle about as long as vertical arm, a large, irregularly wide, and trapezoidal io2, and approximately equal-sized dorsal and anal fins.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	CAUDAL SKELETON ; N-SP ; HIODONTIDAE ; PLAINS ; PISCES ; GENUS ; FISH
收录类别	SCI
语种	英语
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:A1996VL61500002
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4045
专题	中科院古脊椎所（2000年以后）
通讯作者	Li, GQ (reprint author), UNIV ALBERTA, DEPT BIOL SCI, EDMONTON, AB T6G 2E9, CANADA.
作者单位	ACAD SINICA, INST VERTEBRATE PALEONTOL & PALEOANTHROPOL, BEIJING 100044, PEOPLES R CHINA
推荐引用方式 GB/T 7714	Li, GQ,Wilson, MVH,Li, GQ . The discovery of heterotidinae (Teleostei: Osteoglossidae) from the paleocene Paskapoo formation of Alberta, Canada[J]. JOURNAL OF VERTEBRATE PALEONTOLOGY,1996,16(2):198-209.
APA	Li, GQ,Wilson, MVH,&Li, GQ .(1996).The discovery of heterotidinae (Teleostei: Osteoglossidae) from the paleocene Paskapoo formation of Alberta, Canada.JOURNAL OF VERTEBRATE PALEONTOLOGY,16(2),198-209.
MLA	Li, GQ,et al."The discovery of heterotidinae (Teleostei: Osteoglossidae) from the paleocene Paskapoo formation of Alberta, Canada".JOURNAL OF VERTEBRATE PALEONTOLOGY 16.2(1996):198-209.

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