通过对保存在南京地质古生物研究所的弓石燕类模式标本(由葛利普最早研究)的再研究，作者认为，Sinospirifer Grabau，193l仍是一个有效属。它与Cyrtospirfer Nalivkin，1924的主要区别在于腹壳后部强烈加厚、假三角板中央具有肉茎管以及在壳褶及褶间均发育微瘤(whitneyi—subextensus型的微细纹饰)。Tien(1938)指定S．sinensis Grabau，1931作为Sinospirifer的模式种，因为它与S．subextensus(Martelli，1902)有着相同的形态构造，包括壳形、壳率、中槽壳线型式、中央肉茎管、微细纹饰及内部构造等，所以Ssinensis应是S．subextensus(Martelli，1902)的次同义名，Sinospirifer的模式种应更改为S．subextensus。此外，S．archiaciformis，S.wan-gleighi，S．vilis，S．subhavasakai，S．pellizzarii，S.pellizzariformis和S．heterosinosus几个种在外部及内部构造上也与Ssubextensus相同，同样被视作为S．subextensus的次同义名。葛利普文中所列举的所谓几个种之间的区分特征已在湖南中部同一地点同一层位所采集的同一样品的标本中观察到，它们仅仅是种内变异的现象。对于以往不同种的标本被归人同种的情况，作者均作了修订，例如，S．vilis Grabau，1931实际代表几个种标本的混合体，经修订，分别被归于Siplospirifer subextensus，“Sinospirifer”hayasakai，Tenticospirifer supervilis等。S．sub—hayasakai Grabau，1931仅限于正模为代表的特征，被归于Sinospirifer subextensus，而两个副模标本(NIGP 2736和2740)则应归人”Sinospirifer”gortanioides Grabau，1931。

Restudy of Grabau's type specimens shows that Sinospirifer Grabau, 1931 differs from Cyrtospirifer Nalivkin, 1924 in a number of important shell characters. Sinospirifer is distinguished from Cyrtospirifer by its secondarily infilled ventral posterior, a pseudodeltidium penetrated by a central pedicle tube/foramen, and the whitneyi-subextensus micro-ornament. The type species Spirifer (Sinospirifer) sinensis (subsequent designation by Tien, 1938) is a junior synonym of Spirifer verneuili var. subextensus Martelli, 1902, and henceforth Spirifer subextensus is the type species of Sinospirifer. Most of the illustrated type specimens of eight species of Sinospirifer named by Grabau (1931) are closely similar to Sinospirifer subextensus (Martelli, 1902) in their overall shell shapes, sinal plication patterns, and the presence of a central pedicle tube/foramen, as well as the whitneyi-subextensus micro-ornament, and are considered to be conspecific with S. subextensus. These include Sinospirifer sinensis, S. archiaciformis, S. wangleighi, S. pellizzarii, S. pellizzariformis, and S. heterosinosus. A number of specimens of Sinospirifer vilis and S. subhayasakai illustrated by Grabau (1931), including their holotypes, are transferred to S. subextensus, and the remaining specimens are attributed to four or five other species.

Q915.819 Q915.6

国家自然科学基金，国家重点基础研究发展计划(973计划)，科技部基础性工作项目，40172006,40232019，G 2000077700，2001DEA20020-5，，，