Gogo Formation

Gogo Formation
Stratigraphic range: Frasnian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Approximate paleocoordinates	16°42′S 136°42′E / 16.7°S 136.7°E / -16.7; 136.7
Region	Western Australia
Country	Australia
Type section
Named for	Gogo Station
Thickness at type section	~425 m (1,394 ft)
Gogo Formation (Australia) Show map of Australia Gogo Formation (Western Australia) Show map of Western Australia

The Gogo Formation in the Kimberley region of Western Australia is a Lagerstätte that exhibits exceptional preservation of a Devonian reef community. The formation is named after Gogo Station, a cattle station where outcrops appear and fossils are often collected from,^[1] as is nearby Fossil Downs Station.

History

The reef, which now stands up abruptly in the western Australian desert (as the Windjana Limestone), was first identified in 1940 by paleontologist Curt Teichert, who discovered the first fossil fish from the region.^[2]

Sedimentology

Unweathered sections of the Gogo Formation are made of

The formation was deposited in the Frasnian (late Devonian).[5]

Fossil preservation

The fossils of the Gogo Formation display three-dimensional soft-tissue preservation of tissues as fragile as nerves and embryos with umbilical cords.^[5] Over fifty species of fish have been described from the formation, and arthropods, including phyllocarids^[6] and eurypterids^[7] are similarly well-preserved.^[5] Nautiloids, goniatites and tentaculids are also known from the formation, but their soft tissue is not preserved.^[5]

The calcareous concretions formed around objects from the shallow reef areas which sank into the deep

The discovery of Materpiscis, a placoderm preserved with an embryonic juvenile still attached by its umbilical cord, has revealed that at least some placoderms gave birth to live young.^[8]

Fossil content

Placodermi

Genus	Species	Notes	Images
Austroptyctodus	A. gardinieri	[9]
Bothriolepis	Indeterminate	[10]
Bruntonichthys	B. multidens	[11]
Bullerichthys	B. fascidens	[11]
Campbellodus	C. decipiens	[9]
Camuropiscis	C. concinnus	[12]
	C. laidlawi	[13]
Compagopiscis	C. croucheri	[14]
Eastmanosteus	E. calliaspis	[15]
Fallacosteus	F. turneri	[16]
Harrytoombsia	H. elegans	[17]
Holonema	H. westolli	[18]
Incisoscutum	I. ritchei
	I. sarahae	[19]
Kendrickichthys	K. cavernosus	[11]
Kimberleyichthys	K. bispicatus	[14]
	K. whybrowi	[14]
Materpiscis	M. attenboroughi	[20]
Latocamurus	L. coulthardi	[21]
Mcnamaraspis	M. kaprios	[22]
Pinguosteus	P. thulborni	[16]
Rolfosteus	R. canningensis	[23]
Simosteus	S. tuberculatus	[24]
Torosteus	T. tuberculatus	[14]
	T. pulchellus	[14]
Tubonasus	T. lennardensis	[23]

Actinopterygii

Genus	Species	Notes	Images
Gogosardina	G. coatesi	[14]
Mimipiscis	M. toombsi	[25]
Moythomasia	M. durgaringa
	M. lineata

Chondrichthyes

Genus	Species	Notes	Images
Gogoselachus	G. lynbeazleyae	[26]

Acanthodians

Sarcopterygii

Genus	Species	Notes	Images
Adololopas	A. moyasmithae	[14]
Chirodipterus	C. australis	[28]
cf. Diplocercides	Indeterminate	[29]
Gogodipterus	G. paddyensis	[30]
Gogonasus	G. andrewsae	[31]
Griphognathus	G. whitei	[28]
Holodipterus	"H" (Holodipteroides) elderae	[14]
	H. gogoensis	[28]
	H. meemanae	[14]
Onychodus	O. jandemarrai	[32]
Pillararhynchus	P. longi	[33]
Rhinodipterus	R. kimberleyensis	[5]
Robinsondipterus	R. longi	[34]
Xeradipterus	X. hatcheri	[35]

Conodonta

Ammonoidea

Arthropoda

Genus	Species	Notes	Images
Montecaris	M. gogoensis	Phyllocarid arthropod, reaching length up to 60 centimetres (24 in).[37]
	M. sp. indet.	[37]
Schugurocaris	S. wami	Phyllocarid arthropod.[37]
	S. sp. indet.
Dithyrocaris	D. sp. indet.
Concavicaris	C. campi	Thylacocephalan arthropod.[6][38]
	C. glenisteri
	C. milesi
	C. playfordi
	C. sp.
Harrycaris	H. whittingtoni
Adelophthalmus	A. waterstoni	An eurypterid. Originally described as a species of Rhenopterus.[39]
Undescribed eurypterid		[40]
'Mushia'		Common fossil from Gogo Formation, undescribed arthropod with unknown affinity. Chemical analysis shows that is likely to be a crustacean.[40]

• Corals

References