Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Pollackophis depressus
Taxonomy
Pollackophis depressus was named by Holman (1998). Its type specimen is UNSM 483397, a set of vertebrae (precloacal vertebra), and it is a 3D body fossil. Its type locality is Pollack Farm Site, which is in a Burdigalian estuary/bay sandstone in the Calvert Formation of Delaware. It is the type species of Pollackophis.
Synonymy list
Year | Name and author |
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1998 | Pollackophis depressus Holman |
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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.
†Pollackophis depressus Holman 1998
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Diagnosis
Reference | Diagnosis | |
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J. A. Holman 1998 | "(1) vertebra slightly wider than long; (2) neural spine long and thin; (3) neural arch depressed; (3) hemal keel well-developed by narrow; (4) subcentral ridges weakly developed; epizgapophyseal spines absent. (pg. 145)" |
Measurements
No measurements are available
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Source: f = family, c = class, subp = subphylum, uc = unranked clade | |||||
References: Behler and King 1979, Carroll 1988, Hendy et al. 2009 |
Age range: Burdigalian or 20.44000 to 15.97000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Burdigalian | USA (Delaware) | Pollackophis depressus (type locality: 18579) |