@article {7145,
	title = {Siphonoconcha - A new class of Early Cambrian bivalved organisms},
	journal = {Paleontologicheskii Zhurnal},
	number = {1},
	year = {1998},
	note = {Times Cited: 1ArticleRussianCited References Count: 21Zk081},
	month = {JAN-FEB},
	pages = {3-16},
	abstract = {The history of study and the morphology of the Early Cambrian problematic family Tianzhushanellidae Conway Morris, 1990 are examined. Based on the valve morphology of the tianzhushanellid species Apistoconcha siphonalis Conway Morris, 1990 a new interpretation of the inner organization of the members of this family and of their possible life-style are proposed. The studied organisms apparently form a separate systematic group which can be recognized as a new class, Siphonoconcha, probably having affinities with Molluscan or Stenotecoid{\textquoteright}s phylums. The taxonomy of the genus Apistoconcha is revised and a new species A. praesiphonalis is described.},
	keywords = {brachiopoda},
	url = {<Go to ISI>://000073283000001},
	author = {Parkhaev, P. Y.}
}
@article {7146,
	title = {The functional morphology of the Cambrian univalved mollusks-helcionellids},
	journal = {Paleontologicheskii Zhurnal},
	number = {4},
	year = {2000},
	note = {Times Cited: 4ArticleRussianCited References Count: 32356uz},
	month = {JUL-AUG},
	pages = {32-39},
	abstract = {The soft-body anatomy of helcionellids is reconstructed-on the basis of a morphofunctional analyses of their shells. Evidently, two systems for the internal organization of helcionellids are possible: the first corresponds to that of the gastropodian class; the second, to that of the monoplacophorian.},
	keywords = {evolution, phylogeny},
	url = {<Go to ISI>://000089462400004},
	author = {Parkhaev, P. Y.}
}
@article {7147,
	title = {The functional morphology of the Cambrian univalved mollusks-helcionellids (art. 2)},
	journal = {Paleontologicheskii Zhurnal},
	number = {5},
	year = {2001},
	note = {Times Cited: 2ArticleRussianCited References Count: 34505dm},
	month = {SEP-OCT},
	pages = {20-26},
	abstract = {The soft-body anatomy of heleionellids is reconstructed on the basis of morphofunctional analysis of their shells. According to this reconstruction, Helcionelloidea sensu lato should be assigned to the class Gastropoda. A functional explanation of the origin of asymmetry within this group of mollusks is given.},
	url = {<Go to ISI>://000172896300003},
	author = {Parkhaev, P. Y.}
}
@article {7148,
	title = {Muscle scars of the Cambrian univalved mollusks and their significance for systematics},
	journal = {Paleontologicheskii Zhurnal},
	number = {5},
	year = {2002},
	note = {Times Cited: 1ArticleRussianCited References Count: 22603pz},
	month = {SEP-OCT},
	pages = {15-19},
	abstract = {Zones of the honeycomb microsculpture have been discovered on the surface-of internal moulds of the Cambrian mollusks, i.e., Bemella communis, B. incomparabilis, Anhuiconus micromberus and Beshtashella tortilis from the Botomian Stage of South Australia and Bemella sp. and Oelandiella sp. from the Tommotian Stage of the Siberian Platform. The species represent three families of the Cambrian univalved mollusks: Helcionellidae, Corcospiridae, and Onychochylidae. It is supposed that these zones are the muscle attachment areas, i.e., muscle scars. The significance of this find for the systematics of the Cambrian mollusks is discussed.},
	url = {<Go to ISI>://000178569800003},
	author = {Parkhaev, P. Y.}
}
@article {7149,
	title = {Phylogenesis and the system of the Cambrian univalved mollusks},
	journal = {Paleontologicheskii Zhurnal},
	number = {1},
	year = {2002},
	note = {Times Cited: 1ArticleRussianCited References Count: 64521ul},
	month = {JAN-FEB},
	pages = {27-39},
	abstract = {The history of the study and the development of ideas about the systematic position of the Cambrian univalved mollusks is reviewed. On the basis of the functional morphology of shells (Parkhaev, 2000a, 2001 a), the phylogenetic scenario of the evolution of the group is reconstructed and its systematics is determined. Several new taxa are described, i.e., Archaeobranchia subclas. nov., Khairkhaniiformes ord. nov., Igarkiellidae fam. nov., Trenellidae fam. nov., Watsonellinae subfam. nov., and Runnegarella gen. nov.},
	keywords = {origin, shell microstructures},
	url = {<Go to ISI>://000173859700004},
	author = {Parkhaev, P. Y.}
}
@article {7150,
	title = {New data on the morphology of shell muscles in Cambrian helcionelloid mollusks},
	journal = {Paleontological Journal},
	volume = {38},
	number = {3},
	year = {2004},
	note = {Times Cited: 0ArticleEnglishCited References Count: 6829tw},
	month = {MAY-JUN},
	pages = {254-256},
	abstract = {Scars of shell muscles have been discovered on internal molds of helcionelloid mollusks of the family Stenothecidae for the first time. The localization of the scars is similar to that in the family Coreospiridae. Since these two families evolved from the ancestral group independently, similar shell muscle systems of Cambrian helcionelloid mollusks may be explained by parallel development.},
	keywords = {cambrian, morphology, shell muscles, univalved mollusks},
	url = {<Go to ISI>://000222073900004},
	author = {Parkhaev, P. Y.}
}
