Biology:Lanarkia
- Lanarkia lanceolata Marss & Ritchie, 1998
- Lanarkia spinulosa Traquair, 1898
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- Lanarkia spinosa Traquair, 1898
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Lanarkia is a genus of extinct thelodont agnathan which existed in what is now Scotland and Canada during the upper Silurian period.[1][2]
Description
Lanarkia were very small fish around 30-45 cm in length that would have been possible prey to eurypterids.[3]
The scales of Lanarkia spinulosa likely served an anti-parasite role, similar to modern sharks which form large groups and cruise at slow to medium speeds. Lanarkia lanceolata preserves scales with a generalized form, similar to modern sharks which swim slowly in open deep-water environments. Lanarkia horrida has an unusual combination of small and larger pointed scales. They could have served a generalist or anti-predator role, though juvenile small-spotted catsharks (Scyliorhinus canicula) use similar scales on their tail to rasp at food.[4][5]
References
- ↑ Lanarkia horrida at www.fossilmuseum.net.
- ↑ Märss, T.; Ritchie, A. (1997). "Articulated thelodonts (Agnatha) of Scotland" (in en). Transactions of the Royal Society of Edinburgh: Earth Sciences 88 (3): 143–195. doi:10.1017/S026359330000691X. ISSN 0263-5933. https://www.cambridge.org/core/product/identifier/S026359330000691X/type/journal_article.
- ↑ "Lanarkia sp.". https://www.athenapub.com/aria1/PAL/lanarkia1.html.
- ↑ Ferrón, Humberto G.; Botella, Héctor (2017). "Squamation and ecology of thelodonts". PLOS ONE 12 (2). doi:10.1371/journal.pone.0172781. PMID 28241029. Bibcode: 2017PLoSO..1272781F.
- ↑ Ferrón, Humberto G; Martínez-Pérez, Carlos; Turner, Susan; Manzanares, Esther; Botella, Héctor (2018). "Patterns of ecological diversification in thelodonts". Palaeontology 61 (2): 303–315. doi:10.1111/pala.12347.
Template:Thelodonti Wikidata ☰ Q6482927 entry
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