Contents

Paleontological Journal

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Vol. 55, No. 7, 2021

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Foreword

p. 715  abstract

Symmetry of Vendobionta (Late Precambrian Metazoa)

A. Yu. Ivantsov and M. A. Zakrevskaya p. 717  abstract

Trilobozoa, Precambrian Tri-Radial Organisms

A. Yu. Ivantsov and M. A. Zakrevskaya p. 727  abstract

Morphophysiological Peculiarities of Articulated Brachiopods and Marine Bryozoans as a Reason for Their Different Evolutionary Consequences of the Permian–Triassic Crisis

G. A. Afanasjeva and L. A. Viskova p. 742  abstract

Study of the Early Telencephalon Genes of Cyclostomes as a Way to Restoring the Evolutionary History of This Unique Part of the Central Nervous System of Vertebrates

G. V. Ermakova, A. V. Kucheryavyy, F. M. Eroshkin, N. Yu. Martynova, A. G. Zaraisky and A. V. Bayramov p. 752  abstract

Origin of the Class Holothuroidea

A. V. Smirnov p. 766  abstract

Role of Heterochronies in the Formation of the Morphological Features of Amphibians in Urban Areas

V. L. Vershinin and S. D. Vershinina p. 787  abstract

Problems and Debated Issues in the Concepton Modular Organization: On the Example of Lower Metazoa

I. A. Kosevich p. 792  abstract

Reproductive Strategies and Patterns in Marine Invertebrates: Diversity and Evolution

A. N. Ostrovsky p. 803  abstract

Evolutionary Transformations of the Metazoan Body Plan: Genomic-Morphogenetic Correlations

V. V. Isaeva and S. V. Rozhnov p. 811  abstract

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