Octoberaspis ushakovi
| Octoberaspis ushakovi | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temporal occurrence | ||||||||||||
| lower devon | ||||||||||||
| 419.2 to 410.8 million years | ||||||||||||
| Locations | ||||||||||||
| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Octoberaspis | ||||||||||||
| Dunlop , 2002 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Octoberaspis ushakovi | ||||||||||||
| Dunlop , 2002 |
Octoberaspis ushakovi is an extinct species from the order Chasmataspidida of the jaw-claw bearers (Chelicerata).
features
The prosoma is almost square with rounded corners, a pronounced front edge and ends in short lateral spines. The small, dorsal eyes are centered and far apart in V-shaped depressions. Between them there is a small tubercle in the middle . The preabdomen is slightly wider than it is long, slightly rounded and, especially on the sides, covered with tubercles. The longest segment is segment 4 with wide side corners. The post abdomen tapers towards the rear. The last postabdome segment has two lateral spines and the slightly longer telson arises from its center .
etymology
The generic name Octoberaspis is made up of October , which comes from the place where it was found, the October Revolution Island , and the Greek word aspis for shield. The specific epithet was chosen in honor of the polar explorer Georgi Alexejewitsch Ushakow .
Location
The species was found in the Severnaya Zemlya Formation on the October Revolution Island in Russia .
Systematics
Octoberaspis ushakovi is a member of the Diploaspididae family from the order Chasmataspidida .
swell
literature
- JA Dunlop: Arthropods from the Lower Devonian Severnaya Zemlya Formation of October Revolution Island (Russia) . Geodiversitas 24 (2), 2002: 349-379. PDF