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Binomial Name. Archaeopteryx lithographica. Archaeopteryx is an extinct bird that evolutionists argue possesses some reptilian-like features causing it to be classified as a evolutionary transitional form, and is considered the first of the so called feathered dinosaurs.inomial Name. Archaeopteryx lithographica. Archaeopteryx is an extinct bird that evolutionists argue possesses some reptilian-like features causing it to be classified as a evolutionary transitional form, and is considered the first of the so called feathered dinosaurs.
The sperm of decapods have been divided into two basic morphological groups: (1) reptantian type (crab, lobster and crayfish) characterized by a membrane-limited nucleus with uncondensed chromatin, nuclear spikes containing microtubules, a complex acrosome, and a membrane lamellar region; and (2) natantian type (shrimp and prawns) with only one spike that is thought to be originating from the acrosome, and a nucleus which is not membrane bound (Dudenhausen and Talbot, 1982).