Anisian

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In the geologic timescale, the Anisian is the age of the Middle Triassic epoch and lasted from 245 million years ago until 237 million years ago, approximately. The Anisian age succeeds the Olenekian age of the Lower Triassic epoch and precedes the Ladinian age of the Middle Triassic epoch.

The earliest dinosaurs to date have been found in rock dating from the Anisian Age.[1]

Contents 1 Vertebrate Fauna 1.1 Therapsids (non-mammalian) 1.2 Nothosauroids 1.3 Placodonts 2 Invertebrate Fauna 2.1 Ceratitida 2.1.1 Lower 2.1.2 Middle 2.1.3 Upper 2.2 Phylloceratida 2.3 Nautilida 2.3.1 Lower 2.3.2 Middle 2.3.3 Upper 2.4 Aulacocerida 2.4.1 Lower

[edit] Vertebrate Fauna

• Ichthyosaurs
• Prestosuchids
• Trigoniids

[edit] Therapsids (non-mammalian)

†Non-mammalian Therapsids of the Anisian
Taxa	Presence	Location	Description	Images
Kannemeyeria				Kannemeyeria.

[edit] Nothosauroids

Nothosauroids of the Anisian
Taxa	Presence	Location	Description	Images
Ceresiosaurus				Ceresiosaurus

[edit] Placodonts

Placodonts of the Anisian
Taxa	Presence	Location	Description	Images
Cyamodus				Cyamodus
Paraplacodus

[edit] Invertebrate Fauna

[edit] Ceratitida

Ananorites Arthaberites Beyrichites Bosnites Buddhaites Bukowskiites Caucasites Danubites Gangadharites Japonites Laboceras Longobarditoides Mesocladiscites Noetlingites Parapinacoceras Parasageceras Phyllocladiscites Proavites Pseudodanubites Psilocladiscites Salterites Tropigymnites Xiphogymnites Pararcestes Sageceras

[edit] Lower

Alloptychites Anagymnites Grambergia Groenlandites Gymnites Lenotropites Pearylandites Silberlingites Isculites Stenopopanoceras

[edit] Middle

Acrochordiceras Alanites Anagymnotoceras Arctohungarites Balatonites Bulogites Cuccoceras Czekanowskites Epacrochordiceras Hollandites Huishuites Inaigymnites Ismidites Kiparisovia Malletophychites Nicomedites Phillipites Platycuccoceras Pronoetlingites Reiflingites Discoptychites Intornites Nevadisculites Paraceratites Parapopanoceras Proarcestes Longobardites Ptychites

[edit] Upper

Amphipopanoceras Aplococeras Arctogymnites Eudiscoceras Eutomoceras Gymnotoceras Halilucites Judicarites Kellnerites Metadinarites Nevadites Parakellnerites Proteusites Repossia Semiornites Serpianites Stoppaniceras Ticinites Tozerites Tropigastrites Joannites Epigymnites Ceratites Flexoptychites Frechites Norites Gevanites Hungarites

[edit] Phylloceratida

Spinoleiophyllites Ussurites Monophyllites

[edit] Nautilida

Trachynautilus Thuringionautilus Styrionautilus

[edit] Lower

Indonautilus Sibyllonautilus

[edit] Middle

Paranautilus

[edit] Upper

Holconautilus Proclydonautilus

[edit] Aulacocerida

Crassiatractites Breviatractites

[edit] Lower

Mojsisovicsteuthis

Triassic period
Lower/Early Triassic	Middle Triassic	Upper/Late Triassic
Induan | Olenekian	Anisian | Ladinian	Carnian | Norian Rhaetian