Read the story here. Advertise at Before It's News here.
Profile image
Story Views
Last hour:
Last 24 hours:

Enigmatic Radinskya nests as a small sea cow in the LRT

% of readers think this story is Fact. Add your two cents.

This has been a tough taxon to nest.
Paleocene Radinskya (Fig 1) has puzzled palenotologists since its description in McKenna et al 1989. Earlier the LRT nested Radinskya closer to the base of elephants than to sea cows. Now that hypothesis has been refined.

Figure 1. Left: Paleocene Radinskya in 3 views. Right: Radinskya to scale with Eocene Prorastomus, a quadrupedal sea cow. ” data-image-caption=”

Figure 1. Left: Paleocene Radinskya in 3 views. Right: Radinskya to scale with Eocene Prorastomus, a quadrupedal sea cow.

” data-medium-file=”″ data-large-file=”″ class=”size-full wp-image-86649″ src=”” alt=”Figure 1. Left: Paleocene Radinskya in 3 views. Right: Radinskya to scale with Eocene Prorastomus, a quadrupedal sea cow.” width=”584″ height=”426″ />

Figure 1. Left: Paleocene Radinskya in 3 views. Right: Radinskya to scale with Eocene Prorastomus, a quadrupedal sea cow. Note the split nasals + frontal contact to naris.

According to Wikipedia – Radinskya:
“it shares many characters with perissodactyls and some with phenacolophids, but is too primitive to be called either a horse, a rhino, or a tapir. Radinskya is known only from a partial skull and upper dentition, which makes it difficult to assess its relationships to other fossils.”

Suggestion: test a wider gamut of taxa to resolved this enigma.

in the large reptile tree (LRT, 2320 taxa) Radinskya now nests with Prorastomus, and Sobrarbesiren cariedli, two Eocene qudrupedal sea cows, which are still close to the trunk-less ancestors of elephants, like Moeritherium. All three frequented swamps.

Radinskya yupingae
(McKenna et al. 1989, Holbrook 2014; IVPP V-5255; Middle Paleocene; China) was originally considered a perissodactyl-like herbivore, but never with confidence. Here Radinskya nests between Ectocion and Procavia, at the base of the elephant clade. Note the tiny procumbent second incisor. Missing are the large procumbent medial incisors. Like Procavia the tabulars contact one another medially, posterior to the central postparietal. The premolar is almost molar-like in appearance.

Sobrarbesiren cariedli
(Díaz-Berenguer 2018; Eocene, 47mya) is a basal sirenian with four legs, a short tail and teeth. The anterior dorsals are taller and the pelvis is longer. The caudal vertebrae have ventral processes. The cervicals are shorter. The forelimbs are larger than the hind limbs.

McKenna MC, Chow M, Ting S and Luo Z 1989. Radinskya yupingae, a perissodactyl-like mammal from the late Paleocene of China. In Prothero DR, Schoch RM The evolution of perissodactyls. Oxford monographs on geology and geophysics. 15. New York: Oxford


Traditional Oligocene bear, Amphicynodon, now basal to elephants


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 Mushroom Nootropic

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.

Report abuse


Your Comments
Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

Load more ...




Email this story
Email this story

If you really want to ban this commenter, please write down the reason:

If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.