灰短尾负鼠(Monodelphis domestica, Wagner, 1842)(有袋目，负鼠科)颅骨骨学的CT研究及内鼻骨底的评论

IF 0.6 4区地球科学 Q4 PALEONTOLOGY

Annals of Carnegie Museum Pub Date : 2022-12-31 DOI:10.2992/007.087.0401

J. Wible

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引用次数: 1

摘要

灰色短尾负鼠，Monodelphis domestica (Wagner, 1842)的成年颅骨的单个骨头被描述并在基于CT扫描的多个视图中说明。作者先前报道了Monodelphis Burnett(1830)颅骨的外骨表面，目前的贡献是一篇伴文，特别关注内骨表面(在颅内和鼻腔内)和个体颅骨元素之间的面，包括鼻翼和前鼻翼。对内鼻底骨骼提供了评论，在家蝇中，它包括一个融合的砾岩，由前上颌骨的内侧腭突、蝶骨、筛骨、蝶前骨和眶蝶前骨形成。这种砾岩包括硬腭背侧的水平架子，广泛存在于有袋类动物中，但目前在单孔目动物和胎盘动物中尚不清楚。

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CT Study of the Cranial Osteology of the Gray Short-Tailed Opossum Monodelphis domestica (Wagner, 1842) (Marsupialia, Didelphidae) and Comments on the Internal Nasal Skeleton Floor

ABSTRACT The individual bones of the adult cranium of the gray short-tailed opossum, Monodelphis domestica (Wagner, 1842) are described and illustrated in multiple views based on CT scans. The author previously reported on the outer bony surfaces of the skull of Monodelphis Burnett, 1830, and the current contribution is a companion piece, paying particular attention to the inner bony surfaces (within the endocranium and nasal cavity) and the facets between individual cranial elements, including the ethmo- and frontoturbinals. Comments are provided on the internal nasal floor skeleton, which in M. domestica includes a fused conglomerate formed by the medial palatine processes of the premaxillae, the vomer, the ethmoid, the presphenoid, and the orbitosphenoids. This conglomerate includes horizontal shelves just dorsal to the hard palate, and occurs widely in marsupials but is currently unknown in monotremes and placentals.

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来源期刊

Annals of Carnegie Museum 综合性期刊-动物学

CiteScore

2.50

自引率

18.20%

发文量

审稿时长

>12 weeks

期刊介绍： Annals of Carnegie Museum is a quarterly journal that publishes peer-reviewed short and medium-length original scientific contributions in organismal biology, earth sciences, and anthropology, in 40 by 52.5 pica format (168 by 220 mm or 6-5/8 by 8-5/8 inches). Subject matter must be relevant to Carnegie Museum of Natural History scientific sections or Powdermill Nature Reserve (PNR), preferably with connection to the Carnegie collection and/or personnel. Carnegie Museum staff and research associates receive publication priority, but others are encouraged to submit papers, especially those manuscripts explicitly based on the Carnegie collection.