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Echinoidea source details

Vaziri, M. R. & Arab, A. L. 2012. Two new species of Arbacioid echinoids (genus Goniopygus) from the Aptian sediments of Baghin area (Kerman, Iran). Iranian Journal of Science & Technology A3, 231-237.
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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 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.
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2013-08-23 06:51:35Z
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Goniopygus annularis Vaziri & Arab, 2012 † (original description (unavailable nomenclaturally))
Goniopygus triangularis Vaziri & Arab, 2012 † (original description (unavailable nomenclaturally))
 Diagnosis

This species differs from G. triangularis in the following counts. In G. annularis peristome is relatively small, ... [details]

 Diagnosis

Test is dome-shaped, 16 to 20 mm in diameter and nearly 11 to 11.5 mm in height, flattened below and subconical ... [details]

 Distribution

Baghin area, west of Kerman City, Kerman Province, Iran [details]

 Distribution

Baghin area, west of Kerman City, Kerman Province, Iran [details]

 Etymology

annularis (Latin) referring to the circular shape of the periperoct.  [details]

 Etymology

triangularis (Latin) refers to the triangular shape of the periproct. [details]


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