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gnathobase

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gnathobase
gnathobase Zool. (ˈneɪθəʊbeɪs) [f. gnatho- + base n.1] A process developed from the lower part of a segmented limb in certain arthropods, modified to bite or crush food. Hence gnathoˈbasic a.1881 E. R. Lankester in Q. Jrnl. Micr. Sci. Apr. 348 Of the six endites the proximal is somewhat isolated and... Oxford English Dictionary
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Acutiramus
The largest preserved tergite suggests that the species could grow up to 1.65 metres in length, while a gnathobase (a lower appendage used to macerate, The gnathobase is similar to that of A. cummingsi, and A. macrophthalmus would likely possess appendages and carapaces that are similar in form and size wikipedia.org
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Amplectobelua
Amplectobelua shares a unique feature among radiodonts with Ramskoeldia, in having gnathobase-like structures (GLSs) underneath its neck region, at least wikipedia.org
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endite
▪ I. endite, n. Zool. (ˈɛndaɪt) [f. Gr. ἔνδ-ον within + -ite1.] An appendage on the inner side of a limb of a crustacean.1881 E. R. Lankester in Q. Jrnl. Microsc. Sci. XXI. 348 The median portion may be spoken of as the axis or corm, whilst the processes may be called ‘phyllites’ or ‘apophyses’, tho... Oxford English Dictionary
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Amplectobeluidae
Another distinctive features only known in amplectobeluid genera were pairs of gnathobase-like structures (known by Amplectobelua and Ramskoeldia), or wikipedia.org
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jaw
▪ I. jaw, n.1 (dʒɔː) Forms: α. 4–5 iow, 4–6 iowe; β. 5–7 iawe, 7– jaw; (5 geaw, gowe, gew, 7 gagh). [A word of difficult etymology, on the origin of which the evidence known to us affords conflicting indications. It occurs in the form jow(e from c 1375; c 1483 we find jaw(e, which before long supers... Oxford English Dictionary
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Parapeytoia
great appendages were 2 or 3 pairs of short appendages, and numerous pairs of well-developed biramous appendages, each formed by a basipod with spiny gnathobase wikipedia.org
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Chasmataspidida
structure of opisthosoma was metastoma, a plate-like structure interpreted as a fused appendage pair of first opisthosomal segment, situated between the gnathobase wikipedia.org
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Herefordopterus
It had 12-13 gnathobasic (of the gnathobase, a lower appendage used in feeding) teeth in the sixth appendage, as in pterygotids. wikipedia.org
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Pentecopterus
with the other megalograptids a series of characteristics such as the randomly-oriented armature on the swollen podomeres of appendage IV and the narrow gnathobase wikipedia.org
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节肢动物门下干群及"恐虾纲"系统发育分析 - 哔哩哔哩
Oct 31, 2022与传统的认知不同，全齿虫因为具有两种不同的颚基状结构（gnathobase-like structure，gls），而被认为是一种凶猛的掠食性动物。 与 鬼 某些自媒体宣传的不同，全齿虫被认为是厌恶虫的近亲，一直以来便归属于"恐虾纲"这个大家庭中，而不是所谓的"异族"，"异端"，将其放在"异虫"这个分类垃圾桶，那就更是大可不必了（而且也确实不算异虫）。 巨大全齿虫（Omnidens amplus）模型，原模型自紫剑君，炽魂修改 关于欧巴宾虫和射齿目与上干群的亲缘关系，之前由于麒麟虾的发现，认为欧巴宾虫科更接近于现存的节肢动物；但是最近的研究有不少都认为射齿目与上干群的亲缘关系要更接近，所以本文沿用这一最新观点。 总结：
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放射齿目
有些物种具有「咀嚼式结构」（gnathobase-like structures, GLSs），咀嚼式结构著生于前桨状叶的基部。背上有列状的「刚毛叶（setal blades or lamellae）」，刚毛叶是由无数的细长结构排列而成，似鳃，刚毛叶附盖在体节的背侧。 wikipedia.org
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Hughmilleriidae
However, the marginal ornamentation of the telson and the possession of 12-13 gnathobasic (of the gnathobase, a lower appendage used in feeding) teeth wikipedia.org
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Hughmilleria
marginal rim much broader anteriorly than posteriorly and appendages spiniferous of Hughmilleria-type, but Hughmilleria had 18-20 gnathobasic (of the gnathobase wikipedia.org
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Xiphosura
The first four pairs of legs end in pincers, and have a series of spines, called the gnathobase, on the inner surface. wikipedia.org
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