Electrocteniza
Electrocteniza Temporal range:
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Chelicerata |
Class: | Arachnida |
Order: | Araneae |
Infraorder: | Mygalomorphae |
Family: | Ctenizidae |
Genus: | †Electrocteniza Eskov & Zonstein , 2000
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Species: | †E. sadilenkoi
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Binomial name | |
†Electrocteniza sadilenkoi Eskov & Zonstein, 2000
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Electrocteniza is an
History and classification
Electrocteniza sadilenkoi is known only from one fossil, the holotype, number "PIN, no. 363/88". It is a single male individual preserved in a clear amber specimen with several unidentified
Description
Electrocteniza sadilenkoi is 5.88 millimetres (0.231 in) in length when the chelicerae are included in the measurement. Of that length the carapace is 2.63 millimetres (0.104 in) and the abdomen is 2.50 millimetres (0.098 in). The shape and general structure of the carapace indicates a close relationship to the modern genera Latouchia from Asia and Sterrochrotus (a synonym of Cteniza) from South Africa. There are several differences between the genera. In general, Electrocteniza's eye tubercle is raised higher than Latouchia and Sterrochrotus. Unlike the modern genera of Ctenizidae, Electrocteniza has completely spineless tibiae, metatarsi and tarsi on legs I and II and chelicera which lack a rastellum.[2]
References
- ^ "†Electrocteniza Eskov and Zonstein 2000 (cork-lid trapdoor spider)". Fossilworks.
- ^ a b c d e f g h Eskov, K. Y.; Zonstein, S. L. (2000). "The First Ctenizoid Mygalomorph Spiders from Eocene Baltic Amber (Araneida: Mygalomorphae: Ctenizidae)". Paleontological Journal. 34 (suppl. 3): S268–S274. Part 1; Part 2 (PDF).
- PMID 19570786.