Eastmanosteus, another biting placoderm, enters the LRT
Placoderms are different from the rest of us
As we learned earlier, placoderms (Figs 1, 2) developed jaws by convergence (Figs 3, 4) and produced only one extant taxon, Phreatobius, a tiny, semi-terrestrial fish from the Amazon.
The origin of placoderms
from armored Drepanaspis was recovered by the LRT (Fig 4) recently. The independent origin of jaws in gnathostomes and placoderms was not considered or suggested in prior studies. If so, let me know so I can promote it here.
References
Eastman CR 1907. NY State Museum Memoir 10: 130.
Hanke GF, Stewart KW and Lammers, GE 1996. Eastmanosteus lundarensis sp. nov. From the Middle Devonian Elm Point and Winnipegosis Formations of Manitoba”. Journal of Vertebrate Paleontology. 16 (4): 606–616. doi:10.1080/02724634.1996.10011351
Johanson Z 2003. Placoderm branchial and hypobranchial muscles and origins in jawed vertebrates. Journal of Vertebrate Paleontology 23, 735–749.
wiki/Eastmanosteus
hwiki/Arthrodira
wiki/Placodermi
reptileevolution.com/dunkleosteus
Source: https://pterosaurheresies.wordpress.com/2022/06/20/eastmanosteus-another-biting-placoderm-enters-the-lrt/
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Please Help Support BeforeitsNews by trying our Natural Health Products below!
Order by Phone at 888-809-8385 or online at https://mitocopper.com M - F 9am to 5pm EST
Order by Phone at 866-388-7003 or online at https://www.herbanomic.com M - F 9am to 5pm EST
Order by Phone at 866-388-7003 or online at https://www.herbanomics.com M - F 9am to 5pm EST
Humic & Fulvic Trace Minerals Complex - Nature's most important supplement! Vivid Dreams again!
HNEX HydroNano EXtracellular Water - Improve immune system health and reduce inflammation.
Ultimate Clinical Potency Curcumin - Natural pain relief, reduce inflammation and so much more.
MitoCopper - Bioavailable Copper destroys pathogens and gives you more energy. (See Blood Video)
Oxy Powder - Natural Colon Cleanser! Cleans out toxic buildup with oxygen!
Nascent Iodine - Promotes detoxification, mental focus and thyroid health.
Smart Meter Cover - Reduces Smart Meter radiation by 96%! (See Video).