201036
A. salteri strongly resembles the thyestiids Procephalaspis and Thyestes , and within Thyestiida , it represents a transitional form between the primitive , superficially Cephalaspis - like forms , such as Thyestes , and the more specialized tremataspid thyestiids , like Tremataspis , Dartmuthia , or Dobraspis , whose headshields tend to resemble hot buns or horseshoe crabs .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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