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Eosternoptyx
Taxonomy
Eosternoptyx was named by Afsari et al. (2014). Its type is Eosternoptyx discoidalis.
It was assigned to Sternoptychidae by Afsari et al. (2014).
It was assigned to Sternoptychidae by Afsari et al. (2014).
Species
E. discoidalis (type species)
Synonymy list
Year | Name and author |
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2014 | Eosternoptyx Afsari et al. p. 29 |
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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.
G. †Eosternoptyx Afsari et al. 2014
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†Eosternoptyx discoidalis Afsari et al. 2014
Diagnosis
Reference | Diagnosis | |
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S. Afsari et al. 2014 | A deep-sea hatchetfish with discoid body; body depth 79.3% of standard length; caudal peduncle length 13.2% of standard length; 28 (13+15) vertebrae; eight pairs of pleural ribs; two posteriormost pleural ribs shortened not reaching the ventral margin of the abdominal keel; six supraneurals; dorsal blade absent; 18 dorsal-fin rays; first dorsal-fin pterygiophore very large and protruding externally beyond the dorsal profile of the body; two preanal spines; anal-fin origin opposite to dorsal-fin origin; posttemporal and supracleithrum not fused; posttemporal spine absent; body naked. |
Measurements
No measurements are available
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Source: f = family, subp = subphylum | |||||
References: Girone et al. 2006, Carroll 1988 |
Age range: base of the Middle Eocene to the top of the Late/Upper Eocene or 47.80000 to 33.90000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Middle Eocene - Late/Upper Eocene | Iran | E. discoidalis (205345) |