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Milner and Sequeira ( 2004 ) have proposed that Kourerpeton may have been from the Early Permian San Angelo Formation in Texas , which has also been the source of the tupilakosaurid Slaugenhopia .
 Texas
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