Haman Formation
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| Haman Formation | |
|---|---|
| Stratigraphic range: Albian ~ | |
| Type | Geological formation |
| Unit of | Hayang Group |
| Underlies | Jindong & Banyawol Formations |
| Overlies | Silla Conglomerate, Hagbong volcanics |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone, shale |
| Location | |
| Coordinates | Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value). |
| Approximate paleocoordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Region | Gyeongsangnam-do |
| Country | South Korea |
| Extent | Gyeongsang Basin |
Haman Formation (South Korea) | |
The Haman Formation (Korean: 함안층; Hanja: 咸安層; RR: Ham-an-cheung) is an Early Cretaceous geological formation in South Korea. It has been dated to the Albian, with an estimated maximum depositional age of 105.4 ± 0.4 Ma.[1] The deposit is known for its tracks, including those of dinosaurs,[2][3] pterosaurs and birds.[4][5][6] It overlies the Silla Conglomerate which overlies the Chilgok Formation. It is laterally equivalent to the Sagog Formation.[7]
Vertebrate paleofauna
[edit | edit source]Fossil pterosaur, theropod, sauropod and ornithopod tracks have been recovered from this formation. Some scratch marks made by theropod tracemakers show signs of avian-like courtship display behavior.[8] Dinosaur skin impressions have also been found in this formation.[9][10]
Ichnofossils
[edit | edit source]| Ichnofossils of the Haman Formation | ||||||
|---|---|---|---|---|---|---|
| Ichnogenus | Ichnospecies | Region[11] | Member | Material | Notes | Image |
| Pteraichnus[4][12] | P. isp. | Namhae | Pterosaur track, showing swimming traces.[11] Haman specimens housed at Korea National University of Education, Cheongwongun, South Korea.[12] | |||
| Dromaeosauripus | D. hamanensis[3] | Namhae | Dromaeosaur track, belonging to a 70 cm (28 in) tall individual. | |||
| Neosauroides[13] | N. koreanensis | Lizard trackway | ||||
| Koreanaornis | K. hamanensis | Haman and Jinju | Bird track; the first vertebrate ichnotaxon reported from South Korea.[14] | |||
| Caririchnium | C. isp. | Juvenile ornithopod tracks, belonging to either derived iguanodonts or basal hadrosauroids. The trackmakers' hip heights are estimated between 76.4 and 102.1 cm (30.1 and 40.2 in).[15] | ||||
| Minisauripus | M. cf. zhenshuonani or M. cf. chuanzhuensis[16] | Namhae | One of the smallest known theropod tracks. | |||
| Ignotornis | Namhae (I. yangi) and Jinju (I. gajinensis) | The oldest known web-footed bird tracks. I. gajinensis shows feeding traces.[11] | ||||
| Brontopodus[2] | B. birdi | Namhae | Sauropod tracks[11] | |||
| Gyeongsangsauropus[17] | G. pentadactylus | Jinju | Sauropod tracks,[11] previously assigned to the ichnogenus Brontopodus | |||
| Batrachopus | B. cf. grandis | Namhae | B. grandis is the archosaur track made by either a bipedal crocodylomorph or therizinosaur.[18] Specimen from Haman Formation was originally assigned to pterosaur trackway ichnotaxon Haenamichnus gainensis.[19] | |||
| Grallator[20] | Sacheon | Theropod track | ||||
See also
[edit | edit source]References
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