|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Avetheropoda - Dromaeosauridae
It was synonymized subjectively with Paronychodon by Estes (1964); it was considered a nomen dubium by Makovicky and Norell (2004).
It was assigned to Goniopoda by Cope (1877); to Megalosaurinidae by Hay (1902); to Theropoda by Tatarinov (1964) and Romer (1966); to Theropoda by Romer (1956) and Steel (1970); and to Dromaeosaurinae by Matthew and Brown (1922), Larson and Currie (2013) and Williamson and Brusatte (2014).
|Year||Name and author|
|1877||Zapsalis Cope p. 572|
|1902||Zapsalis Hay p. 490|
|1922||Zapsalis Matthew and Brown p. 378|
|1956||Zapsalis Romer p. 618|
|1964||Zapsalis Tatarinov p. 540|
|1966||Zapsalis Romer p. 370|
|1970||Zapsalis Steel p. 45|
|2013||Zapsalis Larson and Currie p. 9|
|2014||Zapsalis Williamson and Brusatte p. 12|
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.