Abstract
Four new fossil species of the family Ommatidae from the Yixian Formation of western Liaoning, China are described. Two of them belong go tribe Brochocoleini: Brochocoleus sulcatus sp. nov. and Brochocoleus angustus sp. nov. The other two refer to tribe Ommatini: Cionocoleus planiusculus sp. nov. The diagnosis of Brochocoleus and Cionocoleus, respectively, are revised. A preliminary analysis of geographical distribution suggests a possible migration pathway of the genus Brochocoleus. The relationship between the genus Cionocoleus and the extant family Crowsoniellidae is briefly discussed.
*Supported by National Natural Science Foundation of China (Grant Nos. 30025006, 30370184, 30430100), the Beijing Natural Science Foundation (Grant No. 5032003), Beijing Municipal Commission of Education (Grant No. KZ200410028013) and PHR Project of Beijing Municipal Commission of Education
Notes
*Supported by National Natural Science Foundation of China (Grant Nos. 30025006, 30370184, 30430100), the Beijing Natural Science Foundation (Grant No. 5032003), Beijing Municipal Commission of Education (Grant No. KZ200410028013) and PHR Project of Beijing Municipal Commission of Education