Early Palaeocene Alcidedorbignya compared to the extant marsupial Monodelphis
Quick one today.
These two skulls side-by-side (Fig 1) indicate extant marsupial. Monodelphis domestica, and early Palaeocene, Alcidedorbignya, may be more closely related than anyone thought. Together they create yet another separate origin for the placenta among placental mammals in the LRT. So this topic is getting both complicated and exciting.
This recovery was like turning a page and starting a new chapter.
Hopefully this will resolve all remaining issues.
In evolution no two specimens are identical.
Therefore, no two species and no two genera are identical. In the LRT two slightly dissimilar taxa share more traits with each other than with any other tested taxa. The software does the lumping and splitting.
In their description of Alcidedorbignya
de Muizon et al 2015 mentioned Monodelphis with regard to the nasal turbinates.
Monodelphis and Alcidedorbignya were compared earlier
here in July 2022, but they did not nest together then as they do now. That’s when Monodelphis was considered the last common ancestor of all placentals. That hypothesis has changed in the last few weeks, following Wortman 1902.
References
de Muizon C de & Marshall LG 1992. Alcidedorbignya inopinata (Mammalia: Pantodonta) from the early Paleocene of Bolivia: phylogenetic and paleobiogeographic implications. Journal of Paleontology 66 (3): 499-520.
deMuizon C, Billet G, Argot C, Ladeveze S and Goussard F 2015. Alcidedorbignya inopinata, a basal pantodont (Placentalia, Mammalia) from the early Palaeocene
of Bolivia: anatomy, phylogeny and palaeobiology. Geodiversitas 87(4):397-634.
Halliday TJD, Upchurch P and Goswami A 2015. Resolving the relationships of Paleocene placental mammals. Biological Reviews. 92 (1): 521–550.
Matthew WD 1906. The Osteology of Sinopa, a Creodont Mammal of the Middle Eocene.
Proc. U. S. Nat. Mus., Vol. XXX, pp. 203-233, pl. XVI.
Wortman JL 1901-1903. Studies of Eocene Mammalia in the Marsh Collection, Peabody Museum. Am. Jour. Sci. 11:333–348.
wiki/Placentalia
wiki/Alcidedorbignya
wiki/Monodelpis
Wortman 1902 was first: Three origins for placental mammals hypothesis
Ectoconus and Pantolambda also move very close to the base of the Placentalia
Source: https://pterosaurheresies.wordpress.com/2024/09/06/early-palaeocene-alcidedorbignya-compared-to-the-extant-marsupial-monodelphis/
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.
Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world. 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.
LION'S MANE PRODUCT
Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules
Mushrooms are having a moment. One fabulous fungus in particular, lion’s mane, may help improve memory, depression and anxiety symptoms. They are also an excellent source of nutrients that show promise as a therapy for dementia, and other neurodegenerative diseases. If you’re living with anxiety or depression, you may be curious about all the therapy options out there — including the natural ones.Our Lion’s Mane WHOLE MIND Nootropic Blend has been formulated to utilize the potency of Lion’s mane but also include the benefits of four other Highly Beneficial Mushrooms. Synergistically, they work together to Build your health through improving cognitive function and immunity regardless of your age. Our Nootropic not only improves your Cognitive Function and Activates your Immune System, but it benefits growth of Essential Gut Flora, further enhancing your Vitality.
Our Formula includes: Lion’s Mane Mushrooms which Increase Brain Power through nerve growth, lessen anxiety, reduce depression, and improve concentration. Its an excellent adaptogen, promotes sleep and improves immunity. Shiitake Mushrooms which Fight cancer cells and infectious disease, boost the immune system, promotes brain function, and serves as a source of B vitamins. Maitake Mushrooms which regulate blood sugar levels of diabetics, reduce hypertension and boosts the immune system. Reishi Mushrooms which Fight inflammation, liver disease, fatigue, tumor growth and cancer. They Improve skin disorders and soothes digestive problems, stomach ulcers and leaky gut syndrome. Chaga Mushrooms which have anti-aging effects, boost immune function, improve stamina and athletic performance, even act as a natural aphrodisiac, fighting diabetes and improving liver function. Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules Today. Be 100% Satisfied or Receive a Full Money Back Guarantee. Order Yours Today by Following This Link.
| Visits: | 1,708,713,272 |
| Stories: | 8,451,134 |
Whistler Blowers, Insiders
