Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Gerastos mellishae was named by Adrain (1997). Its type specimen is ROM 52741, a cephalon/head (cranidium), and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1997 | Gerastos mellishae Adrain pp. 27 - 30 figs. Pl. 1, figs. 1-8; PL 2, figs. 1-18 |
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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.
†Gerastos mellishae Adrain 1997
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Diagnosis
Reference | Diagnosis | |
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J. M. Adrain 1997 | Glabella narrow; anterior border furrow abaxially shallow; librigenal field exsagittally elongate; cephalic margin with single row of pores; pygiclium relatively elongate (sagittal length 60-62 percent width), with 8 axial rings. |
Measurements
No measurements are available
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Source: f = family, o = order, c = class | |||||
References: Aberhan et al. 2004, Fortey and Owens 1999, Hendy 2009 |
Age range: Sheinwoodian or 433.40000 to 430.50000 Ma
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Sheinwoodian | Canada (Nunavut) | Gerastos mellishae (25977) | |
Sheinwoodian | Canada (Northwest Territories) | Gerastos mellishae (682 25974 25976) |