“Why do dinosaurs pay for Amazon Shipping?”/“Because they live in the Land before Prime.”

The Land Before Time (1988) is an animated adventure drama film about dinosaurs. How did the dinosaurs order products from Amazon.com in such a prehistoric age? A riddle was posted on Reddit—3amjokes on December 27, 2017:
 
Q: Why do dinosaurs pay for Amazon Shipping?
A: Because they live in the Land before Prime.
   
Amazon Prime began in 2005, so the dinosaurs must have lived before this.
 
         
Wikipedia: Amazon Prime
Amazon Prime is a paid subscription service offered by Amazon.com that gives users access to free two-day delivery (one-day in select areas), streaming video/music and other benefits for a monthly or yearly fee. As of April 2017, Consumer Intelligence Research Partners estimates that Prime has more than 80 million paying users.
 
Wikipedia: The Land Before Time
The Land Before Time is a 1988 American-Irish animated adventure drama film directed and produced by Don Bluth and executive produced by Steven Spielberg, George Lucas, Kathleen Kennedy, and Frank Marshall.
 
Produced by Sullivan Bluth Studios, Amblin Entertainment and Lucasfilm, it features dinosaurs living in the prehistoric times.
   
Reddit—3amjokes
Why do dinosaurs pay for Amazon Shipping? self.3amjokes
Submitted December 27, 2017 by krickme
Because they live in the Land before Prime
 
Twitter
LOL Tweets™‏
@lolmgco
Why do dinosaurs pay for Amazon Shipping?
Because they live in the Land before Prime
9:32 PM - 26 Dec 2017 (Posted after the above.—ed.)
 
Twitter
3AM‏
@3AM_Jokes
Why do dinosaurs pay for Amazon Shipping?... Because they live in the Land before Prime
10:07 PM - 26 Dec 2017
 
Twitter
Sarah Boessenecker‏
@tetrameryx
Me: “Why did dinosaurs have to pay for @amazon shipping? Because they lived in the land before Prime.”
@CoastalPaleo: *dirty look/groan*
11:58 PM - 26 Dec 2017
 
Twitter
Danny Loudermilk‏
@DJLoudermilk
Why did the dinosaur pay for Amazon Shipping?
He lived in the Land before Prime.
4:07 AM - 27 Dec 2017