Name(s) in cluster
| †Sphenacodon ferocior | urn:lsid:organismnames.com:name:492886 |
| †Sphenacodon ferocior Romer & Price 1940 | urn:lsid:organismnames.com:name:4432311 |
| †Sphenacodon ferocior Romer 1937 | urn:lsid:organismnames.com:name:3152764 |
Microreference
91
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