Tiki Formation

{{short description|Geologic formation in India}}

{{Infobox rockunit

| name = Tiki Formation

| image =

| caption =

| type = Geological formation

| age = {{fossil range|Carnian|Norian|Carnian-Norian}}

| period = Norian

| prilithology = Mudstone

| otherlithology = Claystone, sandstone

| namedfor = Tiki village

| namedby =

| region = Madhya Pradesh

| country = India

| coordinates = {{coord|23.9|N|81.4|E|display=inline,title}}

| paleocoordinates = {{coord|42.6|S|51.1|E|display=inline}}

| unitof = Gondwana Group

| subunits = Lower & Upper members

| underlies =

| overlies =

| thickness =

| extent =

| area =

| map = {{Location map+ | India#India Madhya Pradesh

| relief = 1

| width = 250

| float = center

| places =

{{Location map~ | India#India Madhya Pradesh

| lat_deg = 23.9

| lon_deg = 81.4

| mark = Pink ff0080 pog.svg

| marksize = 10

}}

}}

| map_caption =

}}

The Tiki Formation is a Late Triassic (Carnian to Norian) geologic formation in Madhya Pradesh, northern India. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus. Phytosaur remains attributable to the genus Volcanosuchus have also been found in the Tiki Formation.Chatterjee, 1978

The genera Tikiodon, Tikitherium and Tikisuchus and species Rewaconodon tikiensis, Hyperodapedon tikiensis and Parvodus tikiensis have been named after the Tiki Formation.

Paleobiota

{{paleobiota-key-compact}}

= Cynodonts =

class="wikitable" align="center"
colspan="4" align="center" | Cynodonts of the Tiki Formation
GenusSpeciesMaterialNotes
GondwanadonDatta & Das, 1996

| G. tapani

| A single molar

| A morganucodont

Inditherium{{cite journal |last1=Bhat |first1=M. S. |last2=Ray |first2=S. |last3=Datta |first3=P. M. |date=2020 |title=New cynodonts (Therapsida, Eucynodontia) from the Late Triassic of India and their significances |journal=Journal of Paleontology |volume=95 |issue=2 |pages=376–393 |doi=10.1017/jpa.2020.95}}

| I. floris

| Three postcanine teeth

| A dromatheriid

rowspan=2 | Rewaconodon

| R. indicus

| A partial jaw and three postcanine teeth

| rowspan=2 | A dromatheriid

R. tikiensis

|

Ruberodon

| R. roychowdhurii

| Five partial jaws

| A traversodontid

Tikiodon

| T. cromptoni

| A single postcanine tooth

| A mammaliamorph

style="background:#f3e9f3;" | Tikitherium

|style="background:#f3e9f3;" | T. copei

|style="background:#f3e9f3;" | A single postcanine tooth

|style="background:#f3e9f3;" | A mammaliaform. Initially described as a basal mammaliaform related to Docodonta, but later redescribed as a Neogene shrew fossil that was reworked into the older deposit.{{Cite journal |last1=Averianov |first1=Alexander O. |last2=Voyta |first2=Leonid L. |date=March 2024 |title=Putative Triassic stem mammal Tikitherium copei is a Neogene shrew |url=https://link.springer.com/10.1007/s10914-024-09703-w |journal=Journal of Mammalian Evolution |language=en |volume=31 |issue=1 |doi=10.1007/s10914-024-09703-w |issn=1064-7554}}

Cynodontia indet.

|

|

|

= Reptiles =

Teeth similar to Galtonia, Protecovasaurus,{{Cite journal |last1=Ray |first1=Sanghamitra |last2=Bhat |first2=Mohd Shafi |last3=Datta |first3=P. M. |date=2021-02-01 |title=First record of varied archosauriforms from the Upper Triassic of India based on isolated teeth, and their biostratigraphic implications |url=https://www.tandfonline.com/doi/full/10.1080/08912963.2019.1609957 |journal=Historical Biology |language=en |volume=33 |issue=2 |pages=237–253 |doi=10.1080/08912963.2019.1609957 |bibcode=2021HBio...33..237R |issn=0891-2963}} and Azendohsaurus are known from the formation. Claws similar to shuvosaurids and dinosaurs{{Cite journal |last1=Rakshit |first1=Nibedita |last2=Bhat |first2=Mohd Shafi |last3=Ray |first3=Sanghamitra |last4=Datta |first4=P.M. |date=2018 |title=First report of dinosaurian claws from the Late Triassic of India |url=https://linkinghub.elsevier.com/retrieve/pii/S1871174X1730135X |journal=Palaeoworld |language=en |volume=27 |issue=2 |pages=179–187 |doi=10.1016/j.palwor.2018.01.001}} have also been reported, though their exact identification is questionable. Saurischian dinosaurs may have been present based on vertebrae and limb fragments.{{Cite journal |last1=Ray |first1=Sanghamitra |last2=Bhat |first2=Mohd Safi |last3=Mukherjee |first3=Debarati |last4=Datta |first4=P. M. |date=2016-12-31 |title=Vertebrate fauna from the Late Triassic Tiki Formation of India: new finds and their biostratigraphic implications |url=https://jpsonline.co.in/index.php/jop/article/view/298 |journal=Journal of Palaeosciences |language=en |volume=65 |issue=(1-2) |pages=47–59 |doi=10.54991/jop.2016.298 |issn=2583-4266}}

class="wikitable" align="center"
colspan="4" align="center" | Reptiles of the Tiki Formation
Genus / TaxonSpeciesMaterialNotes
Clevosaurus{{Cite journal |last1=Bhat |first1=Mohd Shafi |last2=Datta |first2=Debajit |last3=Ray |first3=Sanghamitra |last4=Datta |first4=P. M. |date=2023-01-02 |title=A new clevosaurid (Lepidosauria: Rhynchocephalia) from the Upper Triassic of India |url=https://www.tandfonline.com/doi/full/10.1080/02724634.2023.2232833 |journal=Journal of Vertebrate Paleontology |language=en |volume=43 |issue=1 |doi=10.1080/02724634.2023.2232833 |issn=0272-4634}}

|C. nicholsi

|Jaw fragments

|A clevosaurid sphenodont

Colossosuchus{{Cite journal |last1=Datta |first1=D. |last2=Ray |first2=S. |year=2023 |title=A giant phytosaur (Diapsida, Archosauria) from the Upper Triassic of India with new insights on phytosaur migration, endemism and extinction |journal=Papers in Palaeontology |volume=9 |issue=1 |at=e1476 |doi=10.1002/spp2.1476 |bibcode=2023PPal....9E1476D |s2cid=257103850}}

| C. techniensis

| Known from multiple skeletons, all likely died together

| A very large mystriosuchine phytosaur

Desmatosuchnae Indet.{{Cite journal|last1=Haldar |first1=A. |last2=Ray |first2=S. |year=2025 |title=First report of desmatosuchine aetosaur (Pseudosuchia, Aetosauriformes) osteoderms from the Upper Triassic Tiki Formation of India: Their complex internal vascular system, functional significance and biostratigraphy |journal=Journal of Anatomy |doi=10.1111/joa.14255 |pmid=40205778 }}

|

| osteoderms

| A stagonolepidid aetosaur

rowspan="2" | Hyperodapedon

| H. huxleyi

| Rare maxillary tooth plates

| A hyperodapedontine rhynchosaur, also known as Paradapedon.Lydekker, 1885 This species is far more common in the coeval Lower Maleri Formation of central India.

H.tikiensis{{Cite journal |last1=Mukherjee |first1=Debarati |last2=Ray |first2=Sanghamitra |date=2014 |editor-last=Benson |editor-first=Roger |title=A new Hyperodapedon (Archosauromorpha, Rhynchosauria) from the Upper Triassic of India: implications for rhynchosaur phylogeny |url=https://onlinelibrary.wiley.com/doi/10.1111/pala.12113 |journal=Palaeontology |language=en |volume=57 |issue=6 |pages=1241–1276 |bibcode=2014Palgy..57.1241M |doi=10.1111/pala.12113 |issn=0031-0239}}

| Various cranial and postcranial elements

|A hyperodapedontine rhynchosaur

Parasuchus

| P. hislopi

| Skulls

| A basal (non-mystriosuchine) phytosaur

Tikisuchus

| T. romeri

| The skull and some postcranial elements of a young individual

| A putative rauisuchid

Volcanosuchus{{Cite journal |last1=Datta |first1=Debajit |last2=Ray |first2=Sanghamitra |last3=Bandyopadhyay |first3=Saswati |date=2021 |title=Cranial morphology of a new phytosaur (Diapsida, Archosauria) from the Upper Triassic of India: implications for phytosaur phylogeny and biostratigraphy |url=https://onlinelibrary.wiley.com/doi/abs/10.1002/spp2.1292 |journal=Papers in Palaeontology |language=en |volume=7 |issue=2 |pages=675–708 |bibcode=2021PPal....7..675D |doi=10.1002/spp2.1292 |issn=2056-2802 |s2cid=213698017}}

| V. statisticae

| A skull

| A mystriosuchine phytosaur

Ornithischia indet.Datta et al., 2005

|

|

|

Phytosauria indet.Mukherjee & Ray, 2012

|

|

|

Pseudosuchia indet.Huene, 1940

|

|

|

Sphenodontia indet.{{Cite journal |last1=Singh |first1=Y. Priyananda |last2=Sharma |first2=K. Milankumar |last3=Tiwari |first3=Raghavendra Prasad |last4=Patnaik |first4=Rajeev |last5=Singh |first5=Nongmaithem Amardas |last6=Singh |first6=Ningthoujam Premjit |date=27 March 2023 |title=Lepidosauromorphs and associated vertebrate fauna from the Late Triassic Tiki Formation, South Rewa, Gondwana basin, India: implication for paleoenvironment and paleobiogeography |url=https://link.springer.com/article/10.1007/s43538-023-00162-0 |journal=Proceedings of the Indian National Science Academy |language=en |volume=89 |issue=2 |pages=325–346 |doi=10.1007/s43538-023-00162-0 |bibcode=2023INSAP..89..325S |issn=0370-0046 |access-date=27 December 2024 |via=Springer Nature Link}}

|

|

|

Theropoda indet.

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|

= Amphibians =

class="wikitable" align="center"
colspan="4" align="center" | Amphibians of the Tiki Formation
GenusSpeciesMaterialNotes
Eodiscoglossus

| E. sp

|An incomplete jaw

| A discoglossid frog

Compsocerops{{Cite journal |last1=Chakravorti |first1=Sanjukta |last2=Sengupta |first2=Dhurjati Prasad |date=2023-03-06 |title=The first record of chigutisaurid amphibian from the Late Triassic Tiki Formation and the probable Carnian pluvial episode in central India |url=https://peerj.com/articles/14865/ |journal=PeerJ |language=en |volume=11 |pages=e14865 |doi=10.7717/peerj.14865 |doi-access=free |issn=2167-8359}}

| C. tikiensis

|

| A chigutisaurid temnospondyl

MetoposaurusChatterjee & Majumdar, 1987

| M. sp.

|

| A metoposaurid temnospondyl

Panthasaurus

| P. maleriensis

|

| A metoposaurid temnospondyl

= Fish =

class="wikitable" align="center"
colspan="4" align="center" | Fishes of the Tiki Formation
GenusSpeciesMaterialNotes
CladodusKumar & Sharma, 2019

| C. sp.

| Teeth

| A ctenacanth

Gnathorhiza

|G. sp.{{Cite journal |last1=Bhat |first1=Mohd Shafi |last2=Ray |first2=Sanghamitra |date=2020-03-15 |title=A record of new lungfishes (Osteichthyes: Dipnoi) from the Carnian (Upper Triassic) of India |url=https://www.tandfonline.com/doi/full/10.1080/08912963.2018.1499020 |journal=Historical Biology |language=en |volume=32 |issue=3 |pages=428–437 |doi=10.1080/08912963.2018.1499020 |bibcode=2020HBio...32..428B |issn=0891-2963}}

|Teeth

|A gnathorhizid lungfish

rowspan="2" |Lonchidion

|L. estesi

|

|A hybodont

L. encumbens

|

|A hybodont

rowspan="2" |Mooreodontus

|M. indicus{{Cite journal |last1=Bhat |first1=Mohd Shafi |last2=Ray |first2=Sanghamitra |last3=Datta |first3=P.M. |date=2018 |title=A new assemblage of freshwater sharks (Chondrichthyes: Elasmobranchii) from the Upper Triassic of India |url=https://linkinghub.elsevier.com/retrieve/pii/S0016699517301717 |journal=Geobios |language=en |volume=51 |issue=4 |pages=269–283 |doi=10.1016/j.geobios.2018.06.004|bibcode=2018Geobi..51..269B }}

|Teeth

| rowspan="2" |A xenacanthid

M. jaini

|Teeth

Pristrisodus{{Cite journal |last1=Bhat |first1=Mohd Shafi |last2=Ray |first2=Sanghamitra |last3=Datta |first3=P. M. |date=2018 |title=A new hybodont shark (Chondrichthyes, Elasmobranchii) from the Upper Triassic Tiki Formation of India with remarks on its dental histology and biostratigraphy |url=https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/new-hybodont-shark-chondrichthyes-elasmobranchii-from-the-upper-triassic-tiki-formation-of-india-with-remarks-on-its-dental-histology-and-biostratigraphy/CB0142469CBECF7333AE748F7E877EAB |journal=Journal of Paleontology |language=en |volume=92 |issue=2 |pages=221–239 |doi=10.1017/jpa.2017.63 |bibcode=2018JPal...92..221B |issn=0022-3360}}

|P. tikiensis

|Teeth

|A hybodont, formerly known as Parvodus tikiensis and Lissodus duffini.

Ptychoceratodus

|P. oldhami

|Teeth

|A ptychoceratodontid lungfish

Tikiodontus

|T. asymmetricus

|Teeth

|A xenacanthid

Actinopterygii indet.

|

|

|

Coelacanthidae indet.

|

|

|

= Flora =

Correlations

The Tiki Formation is considered a temporal equivalent of the Lower Maleri Formation. The majority of the Tiki Formation correlates with the Ischigualasto Formation of Argentina, the upper part of the Santa Maria Formation, and the overlying lower Caturrita Formation of Brazil, the Isalo II Beds of Madagascar, Lossiemouth Sandstone of Scotland, and the lower Tecovas Formation of the Chinle Group of North America.

See also

References

{{Reflist|refs=

{{cite journal |last1=Bhat |first1=M. S. |last2=Ray |first2=S. |last3=Datta |first3=P. M. |title=New cynodonts (Therapsida, Eucynodontia) from the Late Triassic of India and their significances |journal=Journal of Paleontology |date=2020 |volume=95 |issue=2 |pages=376–393 |doi=10.1017/jpa.2020.95|s2cid=228836405 }}

{{cite journal |last1=Datta |first1=P. M. |title=Earliest mammal with transversely expanded upper molar from the Late Triassic (Carnian) Tiki Formation, South Rewa Gondwana Basin, India |journal=Journal of Vertebrate Paleontology |date=2005 |volume=25 |issue=1 |pages=200–207 |doi=10.1671/0272-4634(2005)025[0200:EMWTEU]2.0.CO;2}}

Weishampel et al., 2004, "Dinosaur distribution", pp. 517-607

{{cite journal |last1=Ray |first1=S. |title=A new Late Triassic traversodontid cynodont (Therapsida, Eucynodontia) from India |journal=Journal of Vertebrate Paleontology |date=2015 |volume=35 |issue=3 |pages=e930472 |doi=10.1080/02724634.2014.930472|bibcode=2015JVPal..35E0472R |s2cid=86368800 }}

}}

= Bibliography =

  • {{cite journal |last1=Kumar |first1=J. |first2=K. M. |last2=Sharma |year=2019 |title=Micro and mega-vertebrate fossils from the Late Triassic Tiki Formation, South Rewa Gondwana Basin, India: palaeoenvironmental and palaeobiogeographic implications |journal=Journal of the Palaeontological Society of India |volume=64 |issue=2 |pages=151–168|doi=10.1177/0971102320190201 |bibcode=2019JPalS..64..151K }}
  • {{cite journal |last1=Mukherjee |first1=D. |first2=S. |last2=Ray |year=2012 |title=Taphonomy of an Upper Triassic vertebrate bonebed: A new rhynchosaur (Reptilia; Archosauromorpha) accumulation from India |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=333-334 |pages=75–91|doi=10.1016/j.palaeo.2012.03.010 |bibcode=2012PPP...333...75M }}
  • {{cite journal |last1=Datta |first1=P. M. |first2=D. P. |last2=Das |first3=Z.-X. |last3=Luo |year=2004 |title=A late Triassic dromatheriid (Synapsida: Cynodontia) from India |journal=Annals of Carnegie Museum |volume=73 |issue=2 |pages=72–84|doi=10.5962/p.215151 |doi-access=free |bibcode=2004AnCM...73...72D }}
  • {{cite book |editor-last=Weishampel |editor-first=David B. |editor-last2=Dodson |editor-first2=Peter |editor-last3=Osmólska |editor-first3=Halszka |year=2004 |title=The Dinosauria|edition=2nd |url=https://books.google.com/books?id=vtZFDb_iw40C |location=Berkeley|publisher= University of California Press |pages=1–880 |accessdate=2019-02-21|isbn=0-520-24209-2}}
  • {{cite journal |last1=Datta |first1=P. M. |first2=D. P. |last2=Das |year=1996 |title=Discovery of the oldest fossil mammal from India |journal=Indian Minerals |volume=50 |pages=217–222}}
  • {{cite journal |last1=Chatterjee |first1=S. |first2=P. K. |last2=Majumdar |year=1987 |title=Tikisuchus romeri, a new rauisuchid reptile from the Late Triassic of India |journal=Journal of Paleontology |volume=61 |issue=4 |pages=787–793|doi=10.1017/S0022336000029139 |bibcode=1987JPal...61..787C }}
  • {{cite journal |last=Pal |first=P.K |year=1984 |title=Triassic plant megafossils from the Tiki Formation, South Rewa Gondwana Basin, India |journal=The Palaeobotanist |volume=32 |pages=253–309}}
  • {{cite journal |last=Chatterjee |first=S |year=1978 |title=A primitive parasuchid (Phytosaur) reptile from the Upper Triassic Maleri Formation of India |journal=Palaeontology |volume=21 |pages=83–127}}
  • {{cite journal |last=Huene |first=F. von |year=1940 |title=The tetrapod fauna of the Upper Triassic Maleri Beds |journal=Memoirs of the Geological Survey of India Palaeontologia Indica |series=New Series |volume=32 |pages=1–42}}
  • {{cite journal |last=Lydekker |first=R |year=1885 |title=The Reptilia & Amphibia of the Maleria & Denwa Groups |journal=Memoirs of the Geological Survey of India. Palaeontologia Indica, Series IV. Indian Pretertiary Vertebrata |volume=1 |pages=1–38}}

Category:Geologic formations of India

Category:Triassic System of Asia

Category:Triassic India

Category:Carnian Stage

Category:Norian Stage

Category:Mudstone formations

Category:Sandstone formations

Category:Fluvial deposits

Category:Lacustrine deposits

Category:Paleontology in India

Formations