The superfamily Tellinoidea is widespread and contains approximately 180 living species, which is one of the most diverse and representative groups among the bivalves. In order to extend our knowledge on evolution of tellinoidean species, we newly determined five tellinoidean mitochondrial genomes (mitogenomes). The newly determined mitogenome vary in size from 16,333 to 16,986 bp. The results show that the genome size and genome organization are conserved in tellinoideans. However, gene arrangement and the location of the major non-coding region (NCR) show diversity. The atp8 gene presents in all the five new mitogenomes. Two trnK and trnP genes were detected in Gari togata mitogenome. Phylogenetic analysis supports the monophyly of Tellinoidea, however, it's family Psammobiidae is polyphyletic. CREx analysis suggests that the gene order of Nuttallia olivacea is assumed as the most primitive condition of Tellinoidea. We map the gene order onto the phylogeny and infers the possible gene rearrangement scenarios among tellinoidean mitogenomes. The mitochondrial gene rearrangement is a useful information that help reassessing the phylogeny of Tellinoidea. Phylogenetic relationship and gene arrangement analyses suggest that a careful review for the current taxonomy of the family Psammobiidae is required.

Tellinoidea超科非常广泛，大约有180种生物，是双壳类动物中最具多样性和代表性的物种之一。为了扩展我们对碲的思想，我们新确定了五个碲的线粒体基因组（有丝分裂基因组）。新确定的有丝分裂基因组的大小在16,333 bp至16,986 bp之间。结果表明，在tellinoideans中，基因组大小和基因组组织是保守的。但是，基因排列和主要非编码区（NCR）的位置显示出多样性。该ATP8基因呈现在所有的五个新mitogenomes。在Gari togata中检测到两个trnK和trnP基因有丝分裂基因组。系统发育分析支持Tellinoidea的单性，然而，其Psammobiidae科是多系统的。CREx分析表明，Nuttallia olivacea的基因顺序被认为是Tellinoidea的最原始条件。我们将基因顺序映射到系统发育上，并推断出tellinoidean有丝分裂基因组中可能的基因重排情况。线粒体基因重排是有用的信息，有助于重新评估Tellinoidea的系统发育。系统发生的关系和基因安排分析表明，需要仔细审查当前的肺炎科的分类法。