Biology:Protonympha
From HandWiki
Short description: Genus of animal
| Protonympha | |
|---|---|
| File:Protonympha salicifolia.tif | |
| Holotype specimen of Protonympha salicifolia from the Late Devonian (Frasnian) Gardeau Sandstone near Naples, New York | |
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| Holotype specimen of Protonympha transversa from the Middle Devonian (Givetian) Moscow Formation near Summit, New York | |
| Scientific classification | |
| Kingdom: | Animalia (?)
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| Genus: | †Protonympha Clarke 1903
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| Species | |
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Protonympha is a form genus for problematic fossils of Devonian age in New York. It has been of special interest because of its morphological similarity with the iconic Ediacaran fossil Spriggina, and may have been a late surviving vendobiont.[1]
Description
Protonympha is a flat, quilted fossil, which has previously been compared with the arm of a starfish or an annelid worm, but lacks a segmented carapace or stereom. Its preservation in sandstone is similar to Ediacaran type preservations.[2] A less-accepted hypothesis claims the organisms were terrestrial fossils like lichen, with hypothetically interpreted rhizoid-like extensions as possible evidence it may have lived on land or in shallow pools.[1]
References
- ↑ 1.0 1.1 Retallack, G.J. (2018). "Reassessment of the Devonian Problematicum Protonympha as another post-Ediacaran vendobiont". Lethaia 50 (3): 406–423. doi:10.1111/let.12253.
- ↑ J. J. Sepkoski. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560
Wikidata ☰ Q48971215 entry
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