Le. Holmer et al., EARLY CAMBRIAN LINGULELLOTRETA (LINGULATA, BRACHIOPODA) FROM SOUTH KAZAKSTAN (MALYI-KARATAU RANGE) AND SOUTH CHINA (EASTERN YUNNAN), Journal of paleontology, 71(4), 1997, pp. 577-584
''Lingulepis'' malongensis Rong from the upper part of the Lower Cambr
ian Chiungchussu Formation of Yunnan is referred to Lingulellotreta Ko
neva; L. malongensis (=Lingulellotreta ergalievi Koneva) is redescribe
d on the basis of new material from the Lower Cambrian of south Kazakh
stan. It is the earliest known taxon of the Lingulellotretidae, which
is unique within the Linguloidea in having an elongate pedicle foramen
and internal pedicle tube. The occurrence of Lingulellotreta malongen
sis in south China is considered usually to be of Atdabanian age, but
brachiopod based correlation with south Kazakhstan suggests that a pos
sible Botomian or younger age, for both the upper part of Chiungchussu
Formation in Yunnan and the lowermost part of Shabakty Group in the M
alyi Karatau Range, is equally plausible.