合弓綱

Also known as synapsid, synapsids

羊膜動物的兩大分支之一，哺乳動物的祖先

AI overview

Synapsida is a major group of vertebrates that includes all living mammals and their extinct relatives, and it's distinguished by a unique skull feature—a single opening behind each eye socket that separates synapsids from other major amniote groups like reptiles and birds. Understanding synapsids matters because it helps us trace the evolutionary history of mammals and reveals how a group of ancient tetrapods developed the distinctive anatomical features that would eventually lead to modern mammals.

AI-generated from the Wikipedia summary — may contain errors.

In the Vinony graph

Vinony's link graph records 1,597 inbound references to 合弓綱, and connects out to Therapsida, Cotylorhynchus and Eupelycosauria.

It is catalogued under topics including Extant Pennsylvanian first appearances, Synapsida and Taxa named by Henry Fairfield Osborn.

Vinony links it to 61 Wikipedia language editions.

Museum specimens

Specimen records: 2
Collections: NMMNHS
Recorded in: United States

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Wikidata facts

Instance of: taxon
Parent taxon: amniote
Image: Dimetrodon.jpg

Show 5 more facts

Commons category: Synapsida
taxon name: Synapsida
topic's main category: Category:Synapsida
start time: 312000000-
temporal range start: Pennsylvanian

Sources (2)

via Wikidata · CC0

Article · 中文

合弓綱（学名：Synapsida，意為「合并的颧弓」）也稱獸形綱（Theropsida），是羊膜動物的一綱，包含羊膜動物中所有與哺乳類關係較近的物種。合弓綱是羊膜動物的兩個主要演化支之一，另一個演化支為蜥形綱（Sauropsida）。在以往傳統的分類法中，合弓綱曾是爬行動物的一個亞綱，因合弓綱動物在头骨的兩側各有一個下颞孔，故漢語曾將 Synapsida 译为“下孔亞綱”、“單孔亞綱”、“单弓亚纲”，或称似哺乳爬行動物，现今这些译名已废止。在此旧定義下，哺乳動物起源於爬行動物，但由於分類定義的變化，這種觀點目前是不對的。合弓綱出現在3億800萬年前的晚石炭紀，並成為二叠纪早到晚期的優勢陸地動物，數量眾多且多樣化。二疊紀-三疊紀滅絕事件發生時，許多早期合弓類動物消失，少數物種存活到三叠纪，而主龍類爬行動物迅速成為三疊紀的優勢陸地動物。合弓綱在三叠纪以后渐趋绝灭，只有少數物種存活到白堊紀。現今的哺乳類是合弓綱的後代。

Abstract from DBpedia / Wikipedia · CC BY-SA