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Taxonomy
Hippochaeta was named as a genus. It is not extant.
It was reranked as Isognomon (Hippochaeta) by Ward (1992), Matsubara (2002).
It was assigned to Isognomon by Ward (1992), Matsubara (2002); and to Pterioida by Sepkoski (2002).
It was reranked as Isognomon (Hippochaeta) by Ward (1992), Matsubara (2002).
It was assigned to Isognomon by Ward (1992), Matsubara (2002); and to Pterioida by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Isognomon ageroensis, Isognomon alatus, Isognomon bathonicus, Isognomon bathonicus, Isognomon biplicatum, Isognomon bouchardi, Isognomon brentonensis, Isognomon carolinensis, Isognomon cereviciana, Isognomon chavani, Isognomon choshiensis, Isognomon cornelliana, Isognomon flambarti, Isognomon flambarti, Isognomon flamberti, Isognomon foliaceum, Isognomon heberti, Isognomon holmesi, Isognomon ichikawai, Isognomon igsognomoides, Isognomon inaequicrenata, Isognomon infraliassica, Isognomon jupiter, Isognomon jupiter, Isognomon karakuldjensis, Isognomon lamberti, Isognomon leona, Isognomon lotenoensis, Isognomon lugdunensis, Isognomon lusitanicum, Isognomon lusitanicus, Isognomon marspiallis, Isognomon maxillatus, Isognomon maxillatus, Isognomon maxilliata, Isognomon maxilliatus, Isognomon mechanquilensis, Isognomon mimeticus, Isognomon murchisonii, Isognomon mytiloides, Isognomon nanus, Isognomon patchamensis, Isognomon perplana, Isognomon promytilodes, Isognomon promytiloides, Isognomon promytiloides, Isognomon pseudotomiyasui, Isognomon pygmaea, Isognomon quadrisulcatus, Isognomon rectangularis, Isognomon rekohuenis, Isognomon ricordeanus, Isognomon ricordiana, Isognomon rikuzenicus, Isognomon rollei, Isognomon rugosum, Isognomon rugosus, Isognomon sanchuensis, Isognomon sanchuensis, Isognomon securiformis, Isognomon subplana, Isognomon subplana, Isognomon subplanatum, Isognomon subplanum, Isognomon subspatulus, Isognomon theseni, Isognomon thurmanni, Isognomon tomiyasui, Isognomon tortum, Isognomon trivale, Isognomon valida, Isognomon volaticum, Isognomon volaticum, Isognomon woodsi, Isognomon yinganensis, Isognomon zelandica, Pedalion linguaeformis
Synonymy list
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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.
Subg. †Isognomon (Hippochaeta)
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†Isognomon (Hippochaeta) hataii Noda and Furuichi 1972
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, superf = superfamily, o = order, c = class | |||||
| References: Sanchez Roig 1926, Aberhan et al. 2004, Kiessling 2004, Hendy et al. 2009 | |||||
Age range: base of the Late/Upper Eocene to the top of the Messinian or 37.71000 to 5.33300 Ma
Collections (32 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Eocene | Japan | Isognomon hataii (70910 70911 70912 70913 70914 70916 70917) | |
| Chattian | Austria (Lower Austria) | Isognomon maxillatus (55242) | |
| Chattian | Austria (Upper Austria) | Isognomon maxillatus (55237) | |
| Early/Lower Miocene - Langhian | USA (North Carolina) | Isognomon sp. (173047) | |
| Burdigalian | USA (Delaware) | Isognomon sp. (18579) | |
| Serravallian | USA (Maryland) | Isognomon sp. (60376 70828 70844 70846 70847) | |
| Serravallian | USA (Virginia) | Isognomon sp. (71642) | |
| Tortonian | USA (Virginia) | Isognomon sp. (71632) | |
| Tortonian | USA (Maryland) | Isognomon sp. (70849 70850 70853) | |
| Late/Upper Miocene | USA (North Carolina) | Isognomon sp. (59299) | |
| Late/Upper Miocene | USA (Maryland) | Isognomon sp. (59304) | |
| Late/Upper Miocene | USA (Virginia) | Isognomon sp. (59295 59296 78274) | |
| Messinian | USA (Virginia) | Isognomon sp. (71535 71619 71622 71623 71646 71655) |