#venustulus

[alex-fictus]

My Paleozoic is Purple!

Hurdia - Lunataspis - Marella

Dalmanites - Sacabambaspis - Cheirurus

Pterygotus - Waukesha Butterfly Animal - Venustulus

Coelacanthus - Estemmenosuchus - Stethacanthus

Ichthyostega - Meganeura - Schinderhannes bartelsi

Stickers || Phone Wallpapers Masterlist

[gaetaniu]

La meravigliosa vita del Siluriano antico

Venustulus waukeshaensis. Il Waukesha Biota, un assemblaggio di fossili di 437 milioni di anni fa proveniente dal Wisconsin, negli Stati Uniti, offre un raro sguardo sulla vita in un’antica laguna. Nel suo libro Wonderful Life, Stephen Jay Gould (1989) ha confrontato la gamma di forme degli animali del Cambriano nell’argilla di Burgess con solo altri cinque siti fossili al mondo, uno dei quali a…

[extinctworld-ua]

Venustulus

Venustulus — рід синзіфосуринів, парафілетичної групи викопних хеліцерових членистоногих. Раніше Venustulus вважався частиною клади Prosomapoda. Скам’янілості єдиного типового виду, V. waukeshaensis, були виявлені у відкладеннях силурійського періоду у Вісконсині, США та описані у 2005 році. Venustulus є одним із небагатьох родів синзіфосурин, у яких викопні рештки зберегли докази наявності придатків.

Повний текст на сайті "Вимерлий світ":

https://extinctworld.in.ua/venustulus/

[alphynix]

The synziphosurines were ancient marine chelicerate arthropods that were traditionally thought to be early representatives of the horseshoe crab lineage. But more recent studies have shown them to occupy a slightly more basal position on the chelicerate evolutionary tree, instead being related to the common ancestor of sea scorpions, horseshoe crabs, and arachnids.

(Also horseshoe crabs might actually be part of the arachnids, closely related to ricinuleids!)

Venustulus waukeshaensis was one of the earliest known synziphosurines, living in what is now Wisconsin, USA during the early Silurian, about 436 million years ago. It grew to around 8cm long (~3.2") and had six pairs of appendages on the underside of its body, with the first pair modified into chelicerae and the rest being walking legs.

It also appears to have been blind, lacking any evidence of eyes despite its fossils being fairly well-preserved – suggesting it lived in conditions where vision wasn't much use, such as dark murky water or burrowing around in seafloor sediment.

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[birdstudies]

May 16, 2020 - Yellow-bellied Tit (Pardaliparus venustulus)

These tits are found in lowland and mountain forests of eastern and southeastern China. Often foraging in trees, they also search for food on the ground and in low bushes, probably feeding on invertebrates, berries, and seeds. They build their nests from moss, leaves, animal fur, and other materials in cavities at the bases of trees or in rocks and banks. Females incubate the eggs and both parents care for the chicks.

[squawkoverflow]

A new variant has been added!

Yellow-bellied Tit (Periparus venustulus) © Henry C. Richter

It hatches from absent, abundant, black, bright, eastern, glossy, low, luminous, next, tiny, white, and yellow eggs.

squawkoverflow - the ultimate bird collecting game          🥚 hatch    ❤️ collect     🤝 connect

[xiaobinghan]

Parus venustulus #photoarena_nature #worldmastershotz_nature #bird_brilliance #bird_lovers_daily #birdfreaks #nature_of_our_world #bestbirdshots #nuts_about_birds #planetbirds #bestnatureshots #your_best_birds #your_best_shots #nanpapix #birdsofinstagram #bird_watchers_daily #nuts_about_birds #kings_birds #wms_animals #master_shots #nature_perfection #marvelshots #spendid_shotz #instanaturefriends_ #worldshotz #amazing_picturez #phenomenal_shots #ig_mood #instanaturefriends_ #world_bestanimal #birds_adored https://www.instagram.com/p/BziMXw5FE7B/?igshid=8ul347tfuggq

[alphynix]

Thylacocephalans were a bizarre group of extinct marine arthropods that often looked like tiny alien creatures – and whose evolutionary relationships are still uncertain. Despite existing in oceans around the world for at least 350 million years, their fossil record is rather spotty and their internal anatomy is often poorly preserved, making it difficult to figure out anything more specific than "probably some sort of crustacean".

Possible thylacocephalans are known from as far back as the Cambrian, but one of the earliest definite members of the group was Thylacares brandonensis.

Living during the early Silurian, around 436 million years ago, in the region that today is part of Wisconsin, USA (found in the same fossil formation as last week's Venustulus), this species measured up to about 7.5cm long (3"). Its body was enclosed by a large bivalved carapace, with protruding stalked eyes and what may have been a pair of antennae, along with smaller raptorial limbs than its later relatives.

While it was less specialized than other thylacocephalans it was probably a similar sort of swimming predator, catching prey with its spiny limbs.

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