two new species of arbacioid echinoids (genus goniopygus) from the aptian sediments of baghin area (kerman, iran)
Authors
abstract
two new species of an arbacioid echinoid, genus goniopygus, are reported for the first time from aptiansediments of baghin area, kerman, iran. the main features of the species lie in apical disc and peristomediameter. in goniopygus triangularis sp. nov., the periperoct is triangular in shape with three small, sunkentubercles, located alternatively adjacent to the periperoct, while goniopygus annularis sp. nov. is characterized by having a circular periperoct without any sunken tubercle. also, goniopygus triangularis has a wider peristome than goniopygus annularis. in both species sexual dimorphism is not conspicuous. they lived in restricted to low - moderate energy environments.
similar resources
Two new species of Arbacioid echinoids (genus Goniopygus) from the Aptian sediments of Baghin area (Kerman, Iran)
Two new species of an Arbacioid echinoid, genus Goniopygus, are reported for the first time from Aptian sediments of Baghin area, Kerman, Iran. The main features of the species lie in apical disc and peristome diameter. In Goniopygus triangularis sp. nov., the periperoct is triangular in shape with three small, sunken tubercles, located alternatively adjacent to the periperoct, while Goniopygus...
full textEchinoids of the Genus Tetragramma Agassiz (Phymosomatoida) from the Aptian Sediments of the Basab Region, Northwest of Kerman, Iran
The echinoid fauna of Basab area (Aptian), northwest of Kerman, is fairly rich and diverse, represented by Pygaulidae, Acropeltidae, Emiratiidae, Toxasteridae, Holectypidae, Stomechinidae and Saleniidae. Four regular echinoid species, among which three are new, assigned to genus Tetragramma Agassiz, are described and illustrated in the present paper. The new species are Tetragramma basabensis, ...
full textSexual Dimorphism in a New Species of Cassiduloid Echinoid, Pygaulus baghinensis, from the Aptian Strata of Baghin Area, West of Kerman, Iran
A new species of cassiduloid echinoids, Pygaulus baghinensis is reported for the first time from Aptian sediments of Baghin area, west of Kerman, Iran. The diagnostic features of the species are centrally positioned of the apical disc and approximately low profile of the test. Variation in gonopore size in different individuals allows to conclude that P. baghinensis is sexually dimorphic. Speci...
full textechinoids of the genus tetragramma agassiz (phymosomatoida) from the aptian sediments of the basab region, northwest of kerman, iran
the echinoid fauna of basab area (aptian), northwest of kerman, is fairly rich and diverse, represented by pygaulidae, acropeltidae, emiratiidae, toxasteridae, holectypidae, stomechinidae and saleniidae. four regular echinoid species, among which three are new, assigned to genus tetragramma agassiz, are described and illustrated in the present paper. the new species are tetragramma basabensis, ...
full textTwo new species and a new record of the genus Astragalus (Fabaceae) from NE Iran
During the study on the specimens of Astragalus sect. Ammodendron in the herbarium of Ferdowsi University of Mashhad (FUMH), based on the last and most recent sources, two new species, i.e. A. microfoliolatus sp. nova and A. rashed-mohasseli sp. nova were found and described. Morphological evidence confirmed that the belonging of these taxa to Astragalus sect. Ammodendron. The most important di...
full textsexual dimorphism in a new species of cassiduloid echinoid, pygaulus baghinensis, from the aptian strata of baghin area, west of kerman, iran
a new species of cassiduloid echinoids, pygaulus baghinensis is reported for the first time from aptian sediments of baghin area, west of kerman, iran. the diagnostic features of the species are centrally positioned of the apical disc and approximately low profile of the test. variation in gonopore size in different individuals allows to conclude that p. baghinensis is sexually dimorphic. speci...
full textMy Resources
Save resource for easier access later
Journal title:
iranian journal of science and technology (sciences)ISSN 1028-6276
volume 36
issue 3 2012
Keywords
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023