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Machaeridia is an extinct group of armoured, segmented annelid worms, known from the Early Ordovician (Late Tremadoc) to Carboniferous. It consists of three distinct families: the plumulitids, turrilepadids and lepidocoleids.
了解详细信息:Machaeridia is an extinct group of armoured, segmented annelid worms, known from the Early Ordovician (Late Tremadoc) to Carboniferous. It consists of three distinct families: the plumulitids, turrilepadids and lepidocoleids.
en.wikipedia.org/wiki/Machaeridia_(annelid)Now convincingly interpreted as primitive segmented (annelid) worms, the extinct machaeridians had a scaly 'armour' of mineralized shell plates over or around a soft body of previously unknown...
www.nature.com/articles/451133aA scolecodont is the jaw of a polychaete annelid, a common type of fossil-producing segmented worm useful in invertebrate paleontology. Scolecodonts are common and diverse microfossils, which range from the Cambrian period (around half a billion years ago at the start of the Paleozoic era) to the present.
en.wikipedia.org/wiki/ScolecodontThe phylum Annelida consists of over 22,000 living species of segmented worms. They include earthworms, leeches, and ragworms. Annelids are bilaterally symmetrical, triploblastic invertebrates that inhabit a wide diversity of habitats, including marine environments such as tidal zones, hydrothermal vents, lotic and lentic freshwater habitats ...
encyclopediaofarkansas.net/entries/annelids-6597/Annelids are (mostly) segmented worms that inhabit a broad range of ecological niches in marine, freshwater and terrestrial environments. They exhibit diverse forms and lifestyles, ranging from metre-sized giants like Eunice aphroditois to millimetre-scale interstitial species such as Protodriliformia, and from burrowing to holopelagic habits ...
royalsocietypublishing.org/doi/10.1098/rsbl.2024.0…Ancient worms in armour - Nature
2008年1月9日 · Now convincingly interpreted as primitive segmented (annelid) worms, the extinct machaeridians had a scaly 'armour' of mineralized shell plates over or around a soft body of …
- 作者: Jean-Bernard Caron
- 预计阅读时间:8 分钟
- Publish Year: 2008
Scolecodont - Wikipedia
A scolecodont is the jaw of a polychaete annelid, a common type of fossil-producing segmented worm useful in invertebrate paleontology. Scolecodonts are common and diverse microfossils, …
- 预计阅读时间:4 分钟
Annelids - Encyclopedia of Arkansas
2024年12月17日 · The phylum Annelida consists of over 22,000 living species of segmented worms. They include earthworms, leeches, and ragworms. …
- 预计阅读时间:9 分钟
A burrowing annelid from the early Cambrian | Biology …
2024年10月9日 · Annelids are (mostly) segmented worms that inhabit a broad range of ecological niches in marine, freshwater and terrestrial environments. They exhibit diverse forms and lifestyles, ranging from metre-sized giants like …
Virtual Museum - inverts
Annelida & Priapulida — Segmented & Other Worms The annelids or segmented worms (the group that includes earthworms) are mostly soft-bodied, their fossilization requires special …
The origin of annelids - Parry - 2014 - Wiley Online …
2014年9月12日 · Myzostomids are small, obligate parasites of crinoids that have a fossil record extending to at least the Carboniferous (Welch 1976). They share a suite of characters with annelids, more specifically with aciculates (Rouse …
A microscopic Burgess Shale: small carbonaceous fossils from a …
1 天前 · 1. Introduction. Organically preserved, submillimetric small carbonaceous fossils (SCFs; []) are increasingly complementing the record of Cambrian faunas provided by their …
Phylum Annelida – Definition, Characteristics, …
2024年10月2日 · The earliest indisputable fossils of the annelid group appear in the Paleogene period, which began 66 million years ago. In summary, phylum Annelida encompasses a diverse array of segmented worms found in marine, …
Introduction - British Cave Research Association
Corals are soft bodied animals that live in a calcareous, tubular skeleton. There are two orders of fossilised coral commonly found in the carboniferous limestone, the Rugosa and the Tabulata. They were abundant in the Devonian period but …