Checklist for Superfamily Ptychoparioidea Matthew, 1887 and region Orr Formation (Utah, USA)
List of families for Orr Formation 10 Families width 5 Species | Llanoaspididae LOCHMAN, 1944 | | 0 | Species | Taxom | | Asaphiscidae Raymond, 1924 | | 0 | Species | Taxom | | Elviniidae Kobayashi, 1935 | | 4 | Species | Taxom | | Coosellidae Palmer, 1954 | | 0 | Species | Taxom | | Crepicephalidae Kobayashi, 1935 | | 0 | Species | Taxom | | Menomoniidae Walcott, 1916 | | 0 | Species | Taxom | | Alokistocaridae Resser, 1939 | | 1 | Species | Taxom | | Kingstoniidae Kobayashi, 1933 | | 0 | Species | Taxom | | Tricrepicephalidae Palmer, 1954 | | 0 | Species | Taxom | | Lonchocephalidae Hupé, 1953 | | 0 | Species | Taxom |
Genera for Orr Formation 18 Genera with 5 Species Arcuolimbus Palmer, 1955 | | 0 | Species | Taxom | Blountia Walcott, 1916 | | 0 | Species | Taxom | | Cernuolimbus Palmer, 1965 | | 1 | Species | Taxom | Coosella LOCHMAN, 1936 | | 0 | Species | Taxom | Coosina Rasetti, 1956 | | 0 | Species | Taxom | Crepicephalus Owen, 1852 | | 0 | Species | Taxom | Deiracephalus Resser, 1935 | | 0 | Species | Taxom | | Dunderbergia Walcott, 1960 | | 1 | Species | Taxom | | Elburgia Palmer, 1965 | | 2 | Species | Taxom | Elvinia Walcott, 1924 | | 0 | Species | Taxom | Genevievella LOCHMAN, 1936 | | 0 | Species | Taxom | | Irvingella ULRICH & RESSER, 1924 | | 1 | Species | Taxom | Kingstonia Walcott, 1924 | | 0 | Species | Taxom | Llanoaspis LOCHMAN, 1938 | | 0 | Species | Taxom | Lonchocephalus Owen, 1852 | | 0 | Species | Taxom | Meteoraspis Resser, 1935 | | 0 | Species | Taxom | Terranovella LOCHMAN, 1938 | | 0 | Species | Taxom | Tricrepicephalus Kobayashi, 1935 | | 0 | Species | Taxom |
Species list for Orr Formation 5 Species
Subnodes of Ptychoparioidea with occurrences in Orr Formation | Family | Alokistocaridae ♰ Resser, 1939
| 1 1 | Genus Species | Taxom
| | Family | Asaphiscidae ♰ Raymond, 1924
| 1 0 | Genus Species | Taxom
| | Family | Coosellidae ♰ Palmer, 1954
| 1 0 | Genus Species | Taxom
| | Family | Crepicephalidae ♰ Kobayashi, 1935
| 3 0 | Genera Species | Taxom
| | Family | Elviniidae ♰ Kobayashi, 1935
| 4 4 | Genera Species | Taxom
| | Family | Kingstoniidae ♰ Kobayashi, 1933
| 1 0 | Genus Species | Taxom
| | Family | Llanoaspididae ♰ LOCHMAN, 1944
| 3 0 | Genera Species | Taxom
| | Family | Lonchocephalidae ♰ Hupé, 1953
| 1 0 | Genus Species | Taxom
| | Family | Menomoniidae ♰ Walcott, 1916
| 1 0 | Genus Species | Taxom
| | Family | Tricrepicephalidae ♰ Palmer, 1954
| 2 0 | Genera Species | Taxom
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