253803
Leptorhynchos is an extinct genus of caenagnathine caenagnathid dinosaur known from the Late Cretaceous Dinosaur Park Formation and Aguja Formation of west Texas , USA and southern Alberta , Canada .
 Texas, USA, Alberta, Canada
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Texas, USA, Alberta, Canada