Timeline

The following is a timeline of events chronicling the evolution of TIRA 292b's biosphere. Note that unless otherwise indicated (by bold font), the dates are a rough estimate and have not been explicitly stated.

## Timeline

* 0ma: TIRA 292b is formed
* < 1000ma: First life appears
* c. 3000ma: Evolution of multicellular lifeforms

### 4000ma

* c. 4000ma: Massive increase in biodiversity, Anthostomes and Polypods evolve
* 4023ma: Gastrozoans evolve
* 4034ma: Sarcopods diverge from Tetrabrachians

### 4050ma

* 4055ma: Divergence of Acanthopods and Tachypods
* 4060ma: Acanthopods split up into Hadrorhachids and Orthorhachids
* 4067ma: Ptilopods evolve
* 4075ma: Divergence of Tanypterids and Remipterids
* 4082ma: Tentaclostomes evolve
* 4092ma: Teleopterids evolve

### 4100ma

* 4100ma: Chemotrophs come onto land
* 4110ma: Anostracans evolve
* 4115ma: Chemophytes evolve
* 4119ma: Caulophytes evolve
* 4122ma: Xylophytes evolve
* 4123ma: Atmospheric oxygen levels increase
* 4125ma: Necrophytes evolve
* 4128ma: Dorypods evolve
* 4132ma: Neostomes evolve
* 4137ma: Trichopods evolve
* 4142ma: Temnopods evolve
* 4147ma: Myzostomes evolve

### 4150ma

* 4151ma: Neopods evolve
* 4161ma: Metaxypods evolve
* 4165ma: Coelophytes evolve
* 4170ma: Lophostomes evolve
* 4173ma: Malacoformes evolve
* 4175ma: Diplostomes evolve
* 4180ma: Placostracans and Stenostracans diverge
* 4181ma: Echinostomes evolve
* 4185ma: Coleostracans evolve
* 4187ma: Desmostracans evolve
* 4190ma: Osteopods evolve
* 4194ma: Ancestral notoform rafts to Crescentia
* 4195ma: Polyschians and Synischians diverge
* 4198ma: Platydonts evolve, extinction of many Demostracans

### 4200ma

* 4203ma: Megalobrachids evolve, extinction of most large Placostracans
* 4204ma: Copetarsans evolve
* 4207ma: Dromaeopods evolve, extinction of many Coleostracans
* 4208ma: Myzognathans evolve
* 4209ma: Elastospondyls evolve
* 4210ma: Campylospondyls evolve
* 4212ma: Deinognatha evolve
* 4213ma: Prenobrachids evolve
* 4215ma: Odontognathans evolve
* 4216ma: Thyreostracans evolve
* 4217ma: Trachygnathans and Dolichognathans diverge
* **4220ma**: Decrease in atmospheric CO2 and H2S
* 4221ma: Pelagotheres evolve
* 4223ma: Opisthopterans evolve
* 4225ma: Actatheres and Thalattotheres diverge
* 4226ma: Latopterans evolve
* 4228ma: Brachyphytes evolve
* 4230ma: Isopterygians and Anisopterygians diverge
* 4232ma: Edaphotheres evolve
* 4234ma: Sphenopterans evolve
* 4235ma: Titanopods evolve
* 4236ma: Altiphytes evolve
* 4238ma: Onychodonts evolve
* 4240ma: Scandopods evolve
* 4242ma: Onychodonts split into Euonychodonts and Allodonts
* 4243ma: Titanopods split into Procerapods and Baropods
* 4245ma: Magnopterans evolve
* 4246ma: Edaphotheres split into Leptopods and Eurycherids
* 4247ma: Reptophytes evolve
* 4249ma: Formation of coastal mountain ranges

### 4250ma

* 4250ma: Desertification of continental interior
* 4251ma: Ancestral xenodont rafts to Crescentia
* 4252ma: Dolichostrachans evolve
* 4254ma: Nodophytes evolve
* 4255ma: Dyptopterids evolve
* 4256ma: Cryptophytes evolve
* 4257ma: Tylophytes evolve
* 4259ma: Amblypods evolve
* 4261ma: Brachiocephalians evolve
* 4263ma: Pachypods and Hadrodonts evolve
* 4264ma: Xerostracans evolve
* 4266ma: Lystrocheirids evolve
* 4267ma: Chromatophytes and Picopterans evolve
* 4269ma: Pagophytes evolve
* 4270ma: Thylacopods evolve
* 4273ma: Harpactopods evolve
* 4274ma: Thecopods evolve, Streptotarsans evolve
* 4276ma: Carnophytes evolve
* 4277ma: Necroformes evolve
* 4280ma: Kentrodonts evolve
* 4282ma: Chloroderms evolve
* 4283ma: Cyanoderms evolve
* 4290ma: Pleuropterans evolve
* 4292ma: Pronocanthids and Nothocanthids evolve
* 4294ma: Aspidonts evolve
* 4296ma: Tanybrachids evolve
* 4297ma: Phyllophorans evolve
* 4299ma: Platypterans evolve

### 4300ma

* 4300ma: Supercontinent breaks apart
* 4303ma: Ensidonts evolve
* 4305ma: Theropterans evolve
* **4306ma**: Ice age begins
* 4309ma: Amphidonts evolve
* 4311ma: Teleobrachids evolve
* 4313ma: Camptopods evolve
* 4314ma: Stylopods evolve
* 4316ma: Cryptodonts evolve
* 4317ma: Malleognathans evolve
* 4318ma: Eriotheres evolve
* 4320ma: Trypanocheirids evolve
* 4322ma: Prionodonts evolve
* 4324ma: Ceratobrachids evolve
* 4325ma: Pyronesia forms
* 4326ma: Eriotheres cross sea ice to Crescentia
* 4327ma: Corythobrachids evolve
* 4328ma: Rhamphodonts evolve
* **4330ma**: Ice age ends
* **4331ma**: Isla Proxima forms
* 4332ma: Nanopods evolve
* 4334ma: Rhomaleopods evolve
* 4335ma: Nothodendrons evolve
* 4336ma: Teratocheirids evolve
* 4338ma: Phylactocanthids and Hoplopods evolve
* 4339ma: Chlamypterans evolve
* 4341ma: Xenopsids evolve
* 4342ma: Sphenoceratans evolve
* **4343ma**: Isla Proxima rejoins Eastern Continent, Extinction of Nanopods, Teratocheirids and Rhomaleopods
* 4344ma: Hypsirhynchids evolve
* 4346ma: Temnorhynchids evolve
* 4347ma: Pipiodonts evolve
* 4348ma: Tachydonts evolve

### **4350ma**

* 4350ma: Camarabrachids evolve
* 4351ma: Aphyllophytes evolve
* 4353ma: Oryctocheirids evolve
* 4356ma: Zygophytes evolve
* **4360ma**: Eastern and Western continents rejoin
* **4361ma**: Septentria breaks away from Eastern continent
* 4362ma: Allobrachids spread into the Eastern continent
* 4363ma: Neobrachids evolve
* 4365ma: Extinction of Non-Tachydont Cryptodonts on the supercontinent
* 4366ma: Echinostracans evolve
* 4367ma: Lestognathans evolve
* 4369ma: Deinoglossids evolve
* 4371ma: Astrapophorans evolve
* 4372ma: Phalacrobrachids evolve
* 4374ma: Hybognathans evolve
* 4375ma: Trypophorans evolve
* 4377ma: Harpactophytes evolve
* 4379ma: Acrocheirids evolve
* 4380ma: Apatocheirids evolve
* 4382ma: Stenopsids evolve
* **~4390ma: MASS EXTINCTION**
* 4391ma: Apodomorphs evolve
* 4391ma: Zygodendrons evolve
* 4392ma: Pholcoscelids evolve
* 4392ma: Hylotheres evolve
* 4393ma: Xiphopods evolve
* 4393ma: Procaecoformes evolve
* 4394ma: Distropheognathans evolve
* 4394ma: Brachyscelids evolve
* 4395ma: Pterolophids evolve
* 4396ma: Flagelliferans evolve
* 4396ma: Peloropsids evolve
* 4397ma: Synopterids evolve
* 4398ma: Teleopsids evolve
* 4398ma: Dryptognathans evolve
* 4399ma: Dermatopods evolve
* 4399ma: Thrinaxorhynchids evolve

### **4400ma**

* 4400ma: Chelaphorans evolve
* 4401ma: Oligopods evolve
* 4401ma: Ceratodonts evolve
* 4402ma: Hadronychids evolve
* 4403ma: Myxobolids evolve
* 4404ma: Coryphodonts evolve
* 4404ma: Megantroforms evolve
* 4405ma: Elaphrodonts evolve
* 4406ma: Thaumatotheres evolve
* 4406ma: Pachychelaphorans evolve
* 4407ma: Anaxotheres evolve
* 4408ma: Coryphodonts raft to Septentria
* 4408ma: Aratrodonts evolve
* 4409ma: Dictyorhynchids evolve
* 4409ma: Compsopods evolve
* 4410ma: Cryptonychids evolve
* 4410ma: Gyrinotheres evolve
* 4411ma: Pelecodonts evolve
* 4412ma: Rhabdopods evolve
* 4413ma: Phractoforms evolve
* 4414ma: Xyrodonts evolve
* 4414ma: Glyphonychids evolve
* 4415ma: Spathodonts evolve
* 4416ma: Theristobrachids evolve
* 4417ma: Ankistrobrachids evolve
* 4418ma: Kophodonts evolve
* 4419ma: Archonychids evolve
* **4420ma: You are here**