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Trinity - Glen Rose, Texas, USA

Group	Trinity
Formation	Glen Rose
Member(s)	Lower Upper
Age:	109 - 66 Ma Cretaceous
Interval	Aptian - Albian
Lithology	limestone, wackestone, sandstone/travertine, lime mudstone, "limestone"/"shale"
Number of Collections	26
Number of Occurrences	82

Recorded Sample Locations

Location	Region	Stratigraphic Name
Lake Eanes spillway tracksite	Comanche County, Texas, USA	Trinity - Glen Rose
Blanco County	Blanco County, Texas, USA	Trinity - Glen Rose
Edward's Ranch	Kinney County, Texas, USA	Trinity - Glen Rose - Upper
TMM 42993	Mason County, Texas, USA	Trinity - Glen Rose - Upper
TMM 42994	Uvalde County, Texas, USA	Trinity - Glen Rose - Upper
TMM 40637-3	Medina County, Texas, USA	Trinity - Glen Rose - Upper
TMM 42996	Medina County, Texas, USA	Trinity - Glen Rose - Lower
TMM 42996. Seco Creek	Medina County, Texas, USA	Trinity - Glen Rose
TMM 42998	Bandera County, Texas, USA	Trinity - Glen Rose - Lower
TMM 42999	Kerr County, Texas, USA	Trinity - Glen Rose - Lower
TMM 43000	Kerr County, Texas, USA	Trinity - Glen Rose - Lower
TMM 43001-1	Gillespie County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43002	Comal County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43003	Blanco County, Texas, USA	Trinity - Glen Rose - Lower
TMM 43004	Blanco County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43005	Hays County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43006	Travis County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43007	Travis County, Texas, USA	Trinity - Glen Rose - Upper
TMM 41988-2	Williamson County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43008	Burnet County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43009	Burnet County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43010	Lampasas County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43012	Hamilton County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43018	Hamilton County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43013	Hamilton County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43015	Hamilton County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43022	Bosque County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43024	Somervell County, Texas, USA	Trinity - Glen Rose - Upper
Cottonwood Creek tracksite	Hamilton County, Texas, USA	Trinity - Glen Rose
TMM 43026	Somervell County, Texas, USA	Trinity - Glen Rose - Upper
TMM 40638	Somervell County, Texas, USA	Trinity - Glen Rose - Lower
TMM 43029	Somervell County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43033	Somervell County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43034	Somervell County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43036	Somervell County, Texas, USA	Trinity - Glen Rose - Upper
TMM 43038	Hood County, Texas, USA	Trinity - Glen Rose - Upper
Alfred West Site	Somervell County, Texas, USA	Trinity - Glen Rose - Lower
Boerne Lake spillway tracksite	Kendall County, Texas, USA	Trinity - Glen Rose - Upper
Hondo Creek #3	Medina County, Texas, USA	Trinity - Glen Rose
Collard Creek tracksite	Hamilton County, Texas, USA	Trinity - Glen Rose
Blue Hole tracksites	Somervell County, Texas, USA	Trinity - Glen Rose
Bowden Branch tracksite	Somervell County, Texas, USA	Trinity - Glen Rose
Ice Creek tracksite	Somervell County, Texas, USA	Trinity - Glen Rose
Rock Creek tracksite	Somervell County, Texas, USA	Trinity - Glen Rose
Lanham Mill Cemetery tracksite	Somervell County, Texas, USA	Trinity - Glen Rose
Barker Branch tracksite	Somervell County, Texas, USA	Trinity - Glen Rose
Cedar Brake Camp tracksite	Somervell County, Texas, USA	Trinity - Glen Rose
Wheeler Branch tracksite	Somervell County, Texas, USA	Trinity - Glen Rose
The Narrows	Hays County, Texas, USA	Trinity - Glen Rose
Pleasant Valley Crossing	Hays County, Texas, USA	Trinity - Glen Rose
Spring Branch-Cranes Mill region	Comal County, Texas, USA	Trinity - Glen Rose
Cranes Mill	Comal County, Texas, USA	Trinity - Glen Rose
Suttler road	Comal County, Texas, USA	Trinity - Glen Rose
Comanche Peak Power Plant	Somervell County, Texas, USA	Trinity - Glen Rose
Mangold farm	Bandera County, Texas, USA	Trinity - Glen Rose
Boyd local fauna	Wise County, Texas, USA	Trinity - Glen Rose
Narrows of the Blanco River	Blanco County, Texas, USA	Trinity - Glen Rose
Fredericksburg	Gillespie County, Texas, USA	Trinity - Glen Rose
Santa Monica Springs	Travis County, Texas, USA	Trinity - Glen Rose

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Trinity - Glen Rose - Lower	113 - 101 Ma Early/Lower Cretaceous	lime mudstone/mudstone, "carbonate", wackestone/mudstone, sandstone/"limestone"	20
Trinity - Glen Rose - Upper	113 - 101 Ma Early/Lower Cretaceous	lime mudstone/mudstone, wackestone/mudstone, dolomite, lime mudstone/wackestone, "limestone", grainstone/"siliciclastic", wackestone/packstone, grainstone/packstone, lime mudstone/claystone	75
Trinity - Glen Rose/Paluxy	113 - 101 Ma Early/Lower Cretaceous	sandstone	5

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Plantae kingdom	1	Plantae	122.46 - 109 Ma Early/Lower Cretaceous
Miliolidae family	5	Chromista : Foraminifera : Tubothalamea : Miliolida : Miliolidae	113 - 100.5 Ma Early/Lower Cretaceous
Skolithos sp. genus	6	*Skolithos*	113 - 100.5 Ma Early/Lower Cretaceous
Serpulidae family	5	Animalia : Annelida : Polychaeta : Sabellida : Serpulidae	113 - 100.5 Ma Early/Lower Cretaceous
Ostracoda class	3	Animalia : Arthropoda : Ostracoda	125 - 100.5 Ma Early/Lower Cretaceous
Cyclothyris americana species	7	Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Cyclothyrididae : Cyclothyris : *Cyclothyris americana*	112.03 - 109 Ma Early/Lower Cretaceous
Hybodus sp. genus	6	Animalia : Chordata : Chondrichthyes : Hybodontiformes : Hybodontidae : *Hybodus*	113 - 100.5 Ma Early/Lower Cretaceous
Hypolophus mcnultyi species	7	Animalia : Chordata : Chondrichthyes : Myliobatiformes : Dasyatidae : Hypolophus : *Hypolophus mcnultyi*	113 - 100.5 Ma Early/Lower Cretaceous
Ornithopoda unranked clade	99	Animalia : Chordata : Ornithischia : Ornithopoda	113 - 100.5 Ma Early/Lower Cretaceous
Osteichthyes unranked clade	99	Animalia : Chordata : Osteichthyes	122.46 - 109 Ma Early/Lower Cretaceous
Crocodylia order	4	Animalia : Chordata : Reptilia : Crocodylia	113 - 100.5 Ma Early/Lower Cretaceous
Dinosauria order	4	Animalia : Chordata : Reptilia : Dinosauria	113 - 100.5 Ma Early/Lower Cretaceous
Pterosauria order	4	Animalia : Chordata : Reptilia : Pterosauria	113 - 100.5 Ma Early/Lower Cretaceous
Radiodactylus langstoni species	7	Animalia : Chordata : Reptilia : Pterosauria : Radiodactylus : *Radiodactylus langstoni*	122.46 - 109 Ma Early/Lower Cretaceous
Eubrontes glenrosensis species	7	Animalia : Chordata : Saurischia : Eubrontidae : Grallator (Eubrontes) : *Eubrontes glenrosensis*	125 - 100.5 Ma Early/Lower Cretaceous
Grallatoridae family	5	Animalia : Chordata : Saurischia : Grallatoridae	113 - 100.5 Ma Early/Lower Cretaceous
Brontopodus birdi species	7	Animalia : Chordata : Saurischia : Brontopodus : *Brontopodus birdi*	113 - 100.5 Ma Early/Lower Cretaceous
Gypsichnites sp. genus	6	Animalia : Chordata : Saurischia : *Gypsichnites*	113 - 100.5 Ma Early/Lower Cretaceous
Megalosauropus titanopelobatidus species	7	Animalia : Chordata : Saurischia : Megalosauropus : *Megalosauropus titanopelobatidus*	113 - 100.5 Ma Early/Lower Cretaceous
Sauropoda unranked clade	99	Animalia : Chordata : Saurischia : Sauropoda	113 - 100.5 Ma Early/Lower Cretaceous
Theropoda unranked clade	99	Animalia : Chordata : Saurischia : Theropoda	113 - 100.5 Ma Early/Lower Cretaceous
Titanosauriformes unranked clade	99	Animalia : Chordata : Saurischia : Macrurosaurus : Titanosauriformes	122.46 - 109 Ma Early/Lower Cretaceous
Epiphaxum labyrinthicum species	7	Animalia : Cnidaria : Anthozoa : Helioporacea : Lithotelestidae : Epiphaxum : *Epiphaxum labyrinthicum*	109 - 105.3 Ma Early/Lower Cretaceous
Polytremacis hancockensis species	7	Animalia : Cnidaria : Anthozoa : Helioporacea : Helioporidae : Polytremacis : *Polytremacis hancockensis*	109 - 105.3 Ma Early/Lower Cretaceous
Astreopora leightoni species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Acroporidae : Astreopora : *Astreopora leightoni*	109 - 105.3 Ma Early/Lower Cretaceous
Stelidioseris whitneyi species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Actinastreidae : Stelidioseris : *Stelidioseris whitneyi*	112.03 - 109 Ma Early/Lower Cretaceous
Morphastrea barcenai species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Agariciidae : Morphastrea : *Morphastrea barcenai*	109 - 105.3 Ma Early/Lower Cretaceous
Astrocoenia scyphoidea species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Astrocoeniidae : Astrocoenia : *Astrocoenia scyphoidea*	109 - 105.3 Ma Early/Lower Cretaceous
Aulastraeopora harrisi species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Aulastraeoporidae : Aulastraeopora : *Aulastraeopora harrisi*	109 - 105.3 Ma Early/Lower Cretaceous
Preverastraea infundibuliformis species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Aulastraeoporidae : Preverastraea : *Preverastraea infundibuliformis*	113 - 100.5 Ma Early/Lower Cretaceous
Parasmilia bullardi species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Parasmilia : *Parasmilia bullardi*	112.03 - 109 Ma Early/Lower Cretaceous
Tiarasmilia casteri species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Turbinoliidae : Tiarasmilia : *Tiarasmilia casteri*	109 - 105.3 Ma Early/Lower Cretaceous
Mesomorpha vaughani species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Curtoseriidae : Mesomorpha : *Mesomorpha vaughani*	109 - 105.3 Ma Early/Lower Cretaceous
Diploastrea harrisi species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Diploastreidae : Diploastrea : *Diploastrea harrisi*	112.03 - 109 Ma Early/Lower Cretaceous
Cyathomorpha damoni species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Oulastreidae : Cyathomorpha : *Cyathomorpha damoni*	109 - 105.3 Ma Early/Lower Cretaceous
Eugyra cuyleri species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Faviidae : Eugyra : *Eugyra cuyleri*	109 - 105.3 Ma Early/Lower Cretaceous
Phacellocoenia tolmachoffana species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Faviidae : Phacellocoenia : *Phacellocoenia tolmachoffana*	109 - 105.3 Ma Early/Lower Cretaceous
Meandraraea plummeri species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Haplaraeidae : Meandraraea : *Meandraraea plummeri*	109 - 105.3 Ma Early/Lower Cretaceous
Meandraraea tulae species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Haplaraeidae : Meandraraea : *Meandraraea tulae*	109 - 105.3 Ma Early/Lower Cretaceous
Heterocoenia hilli species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Heterocoeniidae : Heterocoenia : *Heterocoenia hilli*	109 - 105.3 Ma Early/Lower Cretaceous
Latiastrea whitneyi species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Latomeandridae : Latiastrea : *Latiastrea whitneyi*	112.03 - 109 Ma Early/Lower Cretaceous
Thamnoseris morchella species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Latomeandridae : Thamnoseris : *Thamnoseris morchella*	109 - 105.3 Ma Early/Lower Cretaceous
Hydnophora styriaca species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Merulinidae : Hydnophora : *Hydnophora styriaca*	109 - 105.3 Ma Early/Lower Cretaceous
Microsolena texana species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Microsolenidae : Microsolena : *Microsolena texana*	112.03 - 109 Ma Early/Lower Cretaceous
Polyphylloseris icaunensis species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Microsolenidae : Polyphylloseris : *Polyphylloseris icaunensis*	109 - 105.3 Ma Early/Lower Cretaceous
Montastraea sp. genus	6	Animalia : Cnidaria : Anthozoa : Scleractinia : Montastraeidae : *Montastraea*	112.03 - 109 Ma Early/Lower Cretaceous
Isastrea whitneyi species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Merulinidae : Isastrea : *Isastrea whitneyi*	112.03 - 109 Ma Early/Lower Cretaceous
Thecosmilia sp. genus	6	Animalia : Cnidaria : Anthozoa : Scleractinia : Montlivaltiidae : *Thecosmilia*	109 - 105.3 Ma Early/Lower Cretaceous
Siderofungia irregularis species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Siderastreidae : Siderofungia : *Siderofungia irregularis*	109 - 105.3 Ma Early/Lower Cretaceous
Cyathophora haysensis species	7	Animalia : Cnidaria : Anthozoa : Scleractinia : Stylinidae : Cyathophora : *Cyathophora haysensis*	109 - 105.3 Ma Early/Lower Cretaceous
Coenholectypus neocomiensis species	7	Animalia : Echinodermata : Echinoidea : Holectypoida : Holectypidae : Coenholectypus : *Coenholectypus neocomiensis*	145 - 66 Ma Cretaceous
Pseudodiadema texanum species	7	Animalia : Echinodermata : Echinoidea : Pseudodiadematidae : Pseudodiadema : *Pseudodiadema texanum*	145 - 66 Ma Cretaceous
Hemiaster comanchei species	7	Animalia : Echinodermata : Echinoidea : Spatangoida : Hemiasteridae : Hemiaster : *Hemiaster comanchei*	145 - 66 Ma Cretaceous
Enallaster texanus species	7	Animalia : Echinodermata : Echinoidea : Spatangoida : Toxasteridae : Enallaster : *Enallaster texanus*	145 - 66 Ma Cretaceous
Bivalvia class	3	Animalia : Mollusca : Bivalvia	113 - 100.5 Ma Early/Lower Cretaceous
Hippuritacea superfamily	4.7	Animalia : Mollusca : Bivalvia : Hippuritida : Hippuritacea	122.46 - 109 Ma Early/Lower Cretaceous
Cyanobacteria phylum	2	Bacteria : Cyanobacteria	122.46 - 109 Ma Early/Lower Cretaceous
Foraminifera phylum	2	Foraminifera	125 - 100.5 Ma Early/Lower Cretaceous

References

Clark W. B., Twitchell M. W. (1915) The Mesozoic and Cenozoic Echinodermata of the United States, United States Geological Survey Bulletin 54, 1-341

Shuler E. W. (1917) Dinosaur tracks in the Glen Rose Limestone near Glen Rose, Texas, The American Journal of Science, series 4 44 23, 294-298

Wells J. W. (1932) Corals of the Trinity Group of the Comanchean of central Texas, Journal of Paleontology 6 3, 225-256

Houston, Jr. S. H. (1933) Fossil footprints in Comanchean limestone beds, Bandera County, Texas, Journal of Geology 41 6, 650-653

Shuler E. W. (1937) Dinosaur tracks at the fourth crossing of the Paluxy River near Glen Rose, Texas, Field & Laboratory 5 2, 33-36

Albritton C. C. (1942) Dinosaur tracks near Comanche, Texas, Field & Laboratory 10 2, 160-181

Ager D. V. (1964) Further New Rhynchonelloid Brachiopods from the Texas Cretaceous, Journal of Paleontology 38 1, 109-112

Thurmond J. T. (1971) Cartilaginous fishes of the Trinity Group and related rocks (Lower Cretaceous) of north central Texas, Southeastern Geology 13, 207-227

Langston W. (1974) Nonmammalian Comanchean tetrapods, Aspects of Trinity Division Geology. A Symposium on the Stratigraphy, Sedimentary Environments, and Fauna of the Comanche Cretaceous Trinity Division (Aptian and Albian) of Texas and Northern Mexico. Geoscience and Man 8, 77-102

Neufeld B. (1975) Dinosaur tracks and giant men, Origins 2 2, 64-76

Sams R. H. (1982) Newly discovered dinosaur tracks, Comal County, Texas, Bulletin of the South Texas Geological Society 23, 19-23

Farlow J. O. (1987) , A Guide to Lower Cretaceous Footprints and Tracksites of the Paluxy River Valley, Somervell County, Texas. South-Central Geological Society of America Guidebook, 50-A-20

Kuban G. J. (1989) Elongate dinosaur tracks, Dinosaur Tracks and Traces. Cambridge University Press, Cambridge, 57-72

Farlow J. O., Pittman J. G., et al (1989) Brontopodus birdi, Lower Cretaceous dinosaur footprints from the U.S. Gulf Coastal Plain, Dinosaur Tracks and Traces. Cambridge University Press, Cambridge, 371-394

Pittman J. G. (1989) Stratigraphy, lithology, depositional environment, and track type of dinosaur track-bearing beds of the Gulf Coastal Plain, Dinosaur Tracks and Traces. Cambridge University Press, Cambridge, 135-153

Murry P. A., Winkler D. A., et al (1991) An azhdarchid pterosaur humerus from the Lower Cretaceous Glen Rose Formation of Texas, Journal of Paleontology 65 1, 167-170

Pittman J. G., Lockley M. G. (1995) A review of sauropod dinosaur tracksites of the Gulf of Mexico basin, Aspects of Sauropod Paleobiology. GAIA 10, 95-108

Hawthorne J. M., Bonem R. M., et al (2002) Ichnology, stratigraphy and paleoenvironment of the Boerne Lake spillway dinosaur tracksite, south-central Texas, Texas Journal of Science 54 4, 309-324

Vance T. (2002) Annotated checklist and bibliography of the prehistoric reptile and dinosaur tracks and trackways of Texas, Occasional Papers of the Dallas Paleontological Society 5, 17-79

Tidwell V., Carpenter K. (2003) Braincase of an Early Cretaceous titanosauriform sauropod from Texas, Journal of Vertebrate Paleontology 23 1, 176-180

Kiessling W. (2008) New opinions on coral taxonomy

Farlow J. O., O'Brien M., et al (2012) Dinosaur tracksites of the Paluxy River valley (Glen Rose Formation, Lower Cretaceous), Dinosaur Valley State Park, Somervell County, Texas, Actas del V Jornadas Internacionales sobre Paleontología de Dinosaurios y su Entorno, 41-69

Andres B., Myers T. S. (2013) Lone Star Pterosaurs, Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103, 383-398

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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