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Medfrazyga
Taxonomy
Medfrazyga was named by Frýda and Blodgett (2004).
It was assigned to Palaeozygopleuridae by Frýda and Blodgett (2004); and to Paleozygopleuridae by Mazaev (2015).
It was assigned to Palaeozygopleuridae by Frýda and Blodgett (2004); and to Paleozygopleuridae by Mazaev (2015).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Medfrazyga Frýda and Blodgett p. 123 |
| 2015 | Medfrazyga Mazaev p. 965 |
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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. †Medfrazyga Frýda and Blodgett 2004
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†Medfrazyga clauticae Frýda and Blodgett 2004
†Medfrazyga convexa Nützel and Nakazawa 2012
†Medfrazyga gilmulli Rohr et al. 2008
†Medfrazyga rectecostata Nützel and Nakazawa 2012
†Medfrazyga zaitzevi Mazaev 2015
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 8 | 3.11 | 2.60 | 3.60 | 3.15 | 0.287 | |
| shell diameter | 8 | 1.09 | 0.950 | 1.20 | 1.10 | 0.112 |
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| Source: superf = superfamily, o = order | |||||
| Reference: Bambach et al. 2007 | |||||
Age range: base of the Ludlow to the top of the Capitanian or 427.40000 to 259.51000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ludlow | USA (Alaska) | M. gilmulli (80381) | |
| Early/Lower Emsian | USA (Alaska) | M. clauticae (49107) | |
| Roadian | Russian Federation (Kirov) | M. zaitzevi (126334) | |
| Capitanian | Japan | M. convexa, M. rectecostata (109667) |