Sequence Stratigraphic, Facies & Reservoir Framework for the Bangestan Group, Lurestan, Zagros Mountains, Iran

Molecular phylogeny and taxonomic evaluation of the genus Asaccus Dixon and Anderson, 1973 (Reptilia: Phyllodactylidae) in Iran

Herpetological Journal ◽

10.33256/hj30.4.207214 ◽

2020 ◽

pp. 207-214

Author(s):

Akbar Fattahi

Keyword(s):

Molecular Phylogeny ◽

Nuclear Gene ◽

Genetic Distances ◽

Genetic Lineage ◽

New Taxon ◽

Zagros Mountains ◽

Relict Species ◽

Taxonomical Revision ◽

Two Populations ◽

Taxonomic Evaluation

The Iranian species of the phyllodactylid geckos of the genus Asaccus are found only in the valleys of the Zagros Mountains, a region which represents an important area of endemism in western Iran. Recently, many relict species have been described from the central and southern parts of the Zagros Mountains, which were previously known as A. elisae. The recent descriptions of species within this complex suggest that diversity within the genus may be higher than expected and that its taxonomy and systematics should be revised. In the present study, phylogenetic relationships within the genus Asaccus were evaluated using two mitochondrial and one nuclear gene. Genetically, the genus shows high levels of variability. The molecular phylogeny of the genus suggests the presence of three main clades along the Zagros Mountains with the southern population (from the Hormozgan province) and one clade (A. sp8 and A. sp9) being sister taxon to A. montanus from UAE. The remaining samples are separated into two reciprocally monophyletic groups: the northern (Kurdistan, Kermanshah and Ilam provinces) and the central (Lorestan, Khuzestan, Kohgilouye-Bouyer Ahmad and Fars provinces) Zagros groups. The results of the present study suggest that populations attributed to A. elisae in Iran correspond to distinct lineages with high genetic distances. In brief, our results suggest that the genus needs a major taxonomical revision The Arabian origin of the genus has not been confirmed, because two populations from Zagros were located within the A. montanus, A. gallagheri and A. platyrhynchus clade. Further morphological analyses are needed to systematically define each genetic lineage as a new taxon.

Download Full-text

Cyclic and sequence-stratigraphic characteristics of the Vize-Serpukov deposits of the southern part of Moscow syncline

Moscow University Bulletin. Series 4. Geology ◽

10.33623/0579-9406-2018-4-30-41 ◽

2018 ◽

pp. 30-41

Author(s):

R . R . Gabdullin ◽

А. V. Bershov ◽

Е. N. Samarin ◽

N. V. Badulina ◽

М. А. Afonin ◽

...

Keyword(s):

Generalized Model ◽

Sequence Stratigraphic ◽

Biogenic Carbonate ◽

Clastic Sediments

Composition and origin of Visean–Serpukhovian deposits of the Southern part of the Moscow syncline based upon generalizations of our own results and analysis of published and unpublished data were specified. The levels of karst-influenced rocks correspond to the shallowest biogenic carbonate organogeneous-clastic sediments of the initial and final phases of the eustatic cycle, i.e. the beginning of the transgression (the transgressive system of the tracts) and the end of the regression (the second half of the high-standing tract). In the karst cavities alluvial sands of the Oka river were found. A generalized model of the sequence was proposed and a sequential-stratigraphic interpretation of the studied section was carried out.

Download Full-text