Pulchrilamina was found recently in Early Ordovician bioherm at Huanghuachang

Yichang

Hubei Province.This is the first time to find this fossil in China and even in Asia.Pulchrilamina is a unique laminal organism occurred in reef rock member of the Fengxiang Formation(O

1

)

and consists of laminae and spines.According to the develop-ment of laminae and the crystallographic degree

the laminae can be divided into crystal lamina

lime mud lamina and lamina-like

crystal lamina has mosaic texture and could form binding pores.Spinas grow erectly on the upper surface of the lamina and get thin-ner gradually like pin.The length

the distance and the ratio of the length to diameter is irregular.The spina ends of crystal laminae and lamina-like generally do not extend to the base of the overlying lamina

but it is opposite for lime mud lamina.It is suggested by theauthors to put Pulchrilamina temporarily under a family among incertitude(or uncertain)phylum

class

order.According to the Pulchrilamin's configuration

it possibly belongs to a certain algae.In Batostoma baffling buildup

Pulchrilamina is of the kind that is grown and preserved in situ and is built up by binding.