Science. 1966 Aug 5;153(3736):644-7. doi: 10.1126/science.153.3736.644.
Chainpur and similar, apparently primitive, chondritic meteorites may be precursors of ordinary chondrites; a variety of evidence supports this working hypothesis. In general, carbonaceous chondrites seem to be related collaterally to this genetic sequence rather than being direct ancestors of ordinary chondrites. Metamorphic processes may be responsible for fractionations of elements such as indium and iodine, and type-II carbonaceous chondrites seem to be more primitive than types I or IIIA.
链状球粒陨石和类似的原始球粒陨石可能是普通球粒陨石的前身；各种证据都支持这一工作假说。一般来说，碳质球粒陨石似乎与这一遗传序列有关，而不是普通球粒陨石的直接祖先。变质过程可能导致铟和碘等元素的分馏，而 II 型碳质球粒陨石似乎比 I 型或 IIIA 型更原始。
