Macrosemiidae
| Macrosemiidae | ||||||||||||
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Propterus sp. from Solnhofen |
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| Temporal occurrence | ||||||||||||
| Norium ( Middle Triassic ) to Cenomanium (Lower Upper Cretaceous ) | ||||||||||||
| 247.2 to 93.9 million years | ||||||||||||
| Locations | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Macrosemiidae | ||||||||||||
| Thiollière , 1858 |
The Macrosemiidae are an extinct family of marine bony fish (Osteichthyes). They lived from the Middle Triassic to the Lower Upper Cretaceous . The Macrosemiidae include all genera that are more closely related to Macrosemius than to Callipurbeckia , Semionotus , Lepidotes or Lepisosteus . Many genera were probably reef dwellers.
features
The fish differed from all other bony fish by the strange infraorbitalia (bones around the eyes). The seven infraorbital bones under the eye are folded outwards, the two behind the eye are tubular. The dorsal fin is often elongated or divided into two. In some genera, the scales are missing on the back, around the dorsal fin. The animals were seven to 24 centimeters long.
Systematics
The Macrosemiidae belong to the new fins (Neopterygii), but probably separated from the other Neopterygii very early.
Genera:
- Aphanepygus Bassani, 1879
- Disticholepis Thiollière, 1873
- Enchelyolepis Woodward, 1918
- Eosemionotus Stolley, 1920
- Histionotus Egerton, 1854
- Legnonotus Egerton, 1854
- Macrosemius Agassiz, 1844
- Macrosemiocotzus Gonzalez-Rodriquez, Applegate & Espinosa-Arrubarrena, 2004
- Neonotagogus Bravi, 1994
- Notagogus Agassiz, 1835
- Orthurus
- Palaeomacrosemius Ebert, 2016
- Petalopteryx Pictt, 1851
- Propterus Agassiz, 1834
literature
- Robert L. Carroll : Paleontology and Evolution of the Vertebrates. Thieme, Stuttgart 1993, ISBN 3-13-774401-6 .
- Karl Albert Frickhinger: Fossil Atlas of Fishes. Mergus, Verlag für Natur- und Heimtierkunde Baensch, Melle 1999, ISBN 3-88244-018-X .
- Adriana López-Arbarello: Phylogenetic Interrelationships of Ginglymodian Fishes (Actinopterygii: Neopterygii). PLoS ONE , doi : 10.1371 / journal.pone.0039370 .
- Joseph S. Nelson : Fishes of the World. 4th edition. John Wiley & Sons, Hoboken NJ 2006, ISBN 0-471-25031-7 .
Web links
- The Paleobiology Database Macrosemiidae