Subscriptions must be canceled at least three days before your renewal date to avoid being charged for the next billing cycle. 1  Sign in to your account and select the subscription you want to cancel. 2  Select Cancel subscription. 3  Select Thanks but no thanks, I still want to cancel to confirm your cancelation.
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.
Key Points: â¢Theropods include the majority of carnivorous dinosaurs (although various subgroups evolved towards herbivory, omnivory, insectivory, etc.). They remained entirely obligate bipeds. â¢Among the diagnostic characteristics are an intramandibular joint, a promaxillary fenestra, a furcula (wish bone), and a functionally tridactyl pes.