I.—Description of Carinella, a New Genus of Carboniferous Polyzoa
I.—Description of Carinella, a New Genus of Carboniferous Polyzoa
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一、石炭纪多栖动物新属Carinella的描述
DOI：
10.1017/s0016756800466574
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发表时间：
1873
影响因子：
2.3
通讯作者：
R. Etheridge
中科院分区：
文献类型：
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作者：
R. Etheridge
最近，卡鲁克的兰金博士从附近的石炭纪地层中向作者转发了一小批化石，其中有一些多动物的遗骸，它们所呈现的特征组合很奇特，迄今为止一直被认为是不同属的特征。在 Fenestella，Miller 中，根据 King 的限制，叶状体的每个间隙或茎仅在一侧设有两排或多排细胞孔，由中间龙骨隔开。相反，在Polypora、McCoy中，间隙或间隔物不是龙骨状的，并且前者总是具有许多排细胞孔，通常或多或少地排列成梅花形，与Fenestella中的间隔物一样，是非纤维素的。在所考虑的标本中，出现了上述一些特征的组合，形成了孔雀属和多孔菌属两个属之间的连接纽带。对附图的检查将立即表明，其中所代表的化石不能指上述任何一种，但它们显然似乎是一个新属的类型，建议将其称为 Carinella。目前仅已知一种，最好将其命名为 C. cellulifera。
Amongst a small collection of fossils lately forwarded to the writer for identification, by Dr. Rankin, of Carluke, from the Carboniferous beds of that neighbourhood, are some remains of Polyzoa, peculiar from the combination of characters presented by them, such as have hitherto been considered characteristic of separate genera. In Fenestella, Miller, as restricted by King, each interstice or stem of the frond is provided on one side only with two or more rows of cell-apertures, separated by a median keel. In Polypora, McCoy, on the contrary, the interstices or dissepiments are not carinated, and the former are always provided with numerous rows of cell-apertures, generally arranged more or less in quincunx, the dissepiments as in Fenestella, being non-celluliferous. In the specimens under consideration a combination of some of the above characters takes place, forming a connecting link between the two genera Fenestella and Polypora. An examination of the accompanying drawings will at once show that the fossils there represented cannot be referred to either of the above, but they, certainly appear to be the type of a new genus, which it is proposed to call Carinella. Only one species is at present known, which might with advantage be termed C. cellulifera.