Ridge Creek, Reklaw FM, TX (Eocene of the United States)

Where: Bastrop County, Texas (30.1° N, 97.3° W: paleocoordinates 33.5° N, 83.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Marquez Shale Member (Reklaw Formation), Ypresian (56.0 - 47.8 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; unlithified, glauconitic, argillaceous siltstone and sandstone

• regions of clayey silt alternate with finely laminated sands, glauconite and greensand layers, often with boundaries obscured by contorted bedding. interspersed with the silts are thin shell-rich layers containing corals, bryozoans, molluscs and fish.

Size class: mesofossils

Preservation: original calcite

Collection methods: bulk, surface (in situ), chemical, mechanical,

• molluscs only

Primary reference: C. L. Garvie. 1996. The Molluscan Macrofauna of the Reklaw Formation, Marquez Member (Eocene: Lower Claibornian), in Texas. Bulletins of American Paleontology 111(352):1-177 [L. Ivany/E. Kowalski]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 7789: authorized by Linda Ivany, entered by Elizabeth Kowalski on 02.06.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• Catagory abundances: a = abundant, c= common, u = uncommon, r = rare.
Show authors, comments, and common names
unclassified
  -
Domingella ridgei, ? Pleuofusia huppertzi n. sp., Athletea petrosus
Athletea petrosus
Athletea petrosus smithi
Cephalopoda
 Nautilida - Aturiidae
Aturia turneri
Aturia turneri Stenzel 1940 nautiloid
 Nautilida - Nautilidae
Angulithes elliotti
 Sepiida - Belosepiidae
Belosepia pennae n. sp.
Belosepia pennae n. sp. cuttlefish
Gastropoda
 Cerithioidea - Litiopidae
Litiopa texana n. sp.
Litiopa texana n. sp. snail
 Cerithioidea - Cerithiidae
Bittium ridgei n. sp., Bittium tresquatrum n. sp.
Bittium ridgei n. sp. cerith snail
Bittium tresquatrum n. sp. cerith snail
 Cerithioidea - Turritellidae
Turritella turneri, Glyptozaria americanae n. sp.
Turritella turneri turret shell
Glyptozaria americanae n. sp. turret shell
 Cerithioidea - Planaxidae
Postalia americana n. sp.
Postalia americana n. sp. snail
 Sorbeoconcha - Naticidae
Sinum moveum n. sp., Sinum taylori n. sp., Amaurellina plummeri n. sp., Polinices onustus, Natica moffitti n. sp., Natica brevisulcata n. sp.
Sinum moveum n. sp. moon snail
Sinum taylori n. sp. moon snail
Amaurellina plummeri n. sp. moon snail
Polinices onustus moon snail
Polinices onustus reklawensis
Natica moffitti n. sp. moon snail
Natica brevisulcata n. sp. moon snail
 Sorbeoconcha - Cerithiopsidae
Cerithiopsis sp.
Cerithiopsis sp. Hanley 1849 snail
 Sorbeoconcha - Littorinidae
Littorina eofasciata n. sp.
Littorina eofasciata n. sp. periwinkle
 Sorbeoconcha - Eocypraeidae
"Neosimnia scobina n. sp." = Transovula scobina
"Neosimnia scobina n. sp." = Transovula scobina Garvie 1996 snail
 Sorbeoconcha - Cypraeidae
Cypraeorbis bulbus n. sp.
Cypraeorbis bulbus n. sp. Garvie 1996 cowry
 Sorbeoconcha - Strombidae
"Ectinochilus sp." = Rimella
"Ectinochilus sp." = Rimella Agassiz 1840 true conch
 Sorbeoconcha - Ficidae
"Ficopsis nucleoides n. sp." = Ficus
"Ficopsis nucleoides n. sp." = Ficus fig shell
 Sorbeoconcha - Ranellidae
"Distorsio nucleoides n. sp." = Sassia nucleoides
"Distorsio nucleoides n. sp." = Sassia nucleoides Garvie 1996 triton shell
 Sorbeoconcha - Cassidae
"Galeodea turneri" = Galeodea (Gomphopages) turneri, Phalium reklawensis n. sp.
"Galeodea turneri" = Galeodea (Gomphopages) turneri Gardner 1939 snail
Phalium reklawensis n. sp. snail
 Neogastropoda - Volutidae
"Volutocorbis stenzeli" = Athleta (Volutocorbis)
"Volutocorbis stenzeli" = Athleta (Volutocorbis) volute
 Neogastropoda - Muricidae
Pterynotus cf. stenzeli, Hexaplex eoa n. sp.
Pterynotus cf. stenzeli Vokes 1970 mustached bat
Hexaplex eoa n. sp. murex snail
 Neogastropoda - Costellariidae
Pyramimitra eocenica n. sp.
Pyramimitra eocenica n. sp. ribbed mitre
 Neogastropoda - Olividae
Ancilla staminea
Ancilla staminea Conrad 1832 olive snail
Ancilla staminea reklawensis
 Neogastropoda - Clathurellidae
Eocythara texanum n. gen. n. sp., Varicobela filum n. sp.
Eocythara texanum n. gen. n. sp. snail
Varicobela filum n. sp. snail
 Neogastropoda - Terebridae
Hastula ampulla n. sp., Hastula milamensis n. sp.
Hastula ampulla n. sp. auger snail
Hastula milamensis n. sp. auger snail
 Neogastropoda - Turridae
Surculoma imbricata n. sp., Surculites lapillus n. sp., Michela trabeatoides, ? Hesperiturris monilis n. sp., Hesperiturris nodocarinatus, Eosurcula moorei n. sp., Protosurcula aurora n. sp., "Coronia margaritosa" = Gemmula (Coronia), "Coronia taylori n. sp." = Gemmula (Coronia)
Surculoma imbricata n. sp. turrid
Surculites lapillus n. sp. turrid
Michela trabeatoides Harris 1895 turrid
Michela trabeatoides carinata
Hesperiturris nodocarinatus Gabb 1860 turrid
Hesperiturris nodocarinatus crassus
Eosurcula moorei n. sp. Gabb 1860 turrid
Eosurcula moorei reklawensis
Protosurcula aurora n. sp. turrid
"Coronia margaritosa" = Gemmula (Coronia) turrid
"Coronia taylori n. sp." = Gemmula (Coronia) turrid
 Neogastropoda - Raphitomidae
Raphitoma bastropensis n. sp.
 Neogastropoda - Borsoniidae
Bathytoma cf. nonplicata, Microdrillia aff. robustula, Microdrillia rostratula
 Neogastropoda - Drilliidae
Spirotropis claibornica n. sp.
 Neogastropoda - Clavatulidae
"Leptosurcula carinata n. sp." = Turricula (Leptosurcula)
"Leptosurcula carinata n. sp." = Turricula (Leptosurcula) snail
 Neogastropoda - Cochlespiridae
Tropisurcula grandis n. sp., Tropisurcula planus n. sp., Tropisurcula milamensis n. sp.
Tropisurcula planus n. sp. snail
 Neogastropoda -
Pseudometula gradus n. gen. n. sp.
Pseudometula gradus n. gen. n. sp. snail
 Neogastropoda - Columbellidae
Mitrella nuttalli n. sp.
Mitrella nuttalli n. sp. snail
Mitrella nuttalli lineata c category and Mitrella n. sp. nuttalli u category
 Neogastropoda - Nassariidae
"Tritiaria nodosa n. sp." = Nassarius (Tritiaria), Colwellia bilineata n. sp.
"Tritiaria nodosa n. sp." = Nassarius (Tritiaria) snail
Colwellia bilineata n. sp. snail
 Neogastropoda - Fasciolariidae
Clavilithes parvetorbis n. sp., Fusinus claibornica n. sp., Falsifusus ottonis
Fusinus claibornica n. sp. snail
 Neogastropoda - Buccinidae
Metula elongatoides n. sp., Antillophos multilineatum n. sp., Laevibuccinum lineatum, Euryochetus punctatum n. sp., Terebrifusus multiplicatus, Pseudoliva cf. santander, Strepsidura harrisi
Metula elongatoides n. sp. true whelk
Antillophos multilineatum n. sp. true whelk
Euryochetus punctatum n. sp. true whelk
 Neogastropoda - Melongenidae
? Levifusus serrae n. sp., Cornulina minax n. sp.
? Levifusus serrae n. sp. snail
Cornulina minax n. sp. Solander 1766 snail
Cornulina minax dockeryi
 Neogastropoda - Cancellariidae
Trigonostoma elegantissima n. sp., Trigonostoma herbae n. sp., Admetula irregularis n. sp.
Trigonostoma herbae n. sp. snail
Admetula irregularis n. sp. snail
 Sorbeoconcha - Vitrinellidae
Cyclostremiscus exacuus
 Sorbeoconcha - Vermetidae
? Serpulorbis multiclavus n. sp.
? Serpulorbis multiclavus n. sp. worm shell
 Epitonioidea - Epitoniidae
Amaea texana n. sp., Amaea macula n. sp.
Amaea texana n. sp. wentletrap
Amaea macula n. sp. wentletrap
 Vanikoroidea - Eulimidae
Melanella cf. notata
 Heterostrophia -
Trimalaxis ora n. gen. n. sp.
Trimalaxis ora n. gen. n. sp. snail
 Opisthobranchia - Retusidae
Volvulella reklawensis n. sp., Retusa notata n. sp., Retusa cf. adamsi
Retusa notata n. sp. snail
Retusa cf. adamsi snail
[entered as Retusa adamski]
 Opisthobranchia - Cylichnidae
Philine sp.
Philine sp. Ascanius 1772 snail
 Opisthobranchia - Scaphandridae
Mnestia confusa n. sp., Mnestia rotunda n. sp.
Mnestia confusa n. sp. snail
Mnestia rotunda n. sp. snail
 Heterostropha - Mathildidae
Mathilda iugum n. sp., Mathilda cribraea n. sp., Mathilda cf. claibornensis, Mathilda cf. retisculpta
Mathilda iugum n. sp. snail
Mathilda cribraea n. sp. snail
Mathilda cf. retisculpta snail
Mathilda retisculpta adlrichi
 Heterostropha - Acteonidae
Acteon pomilius, "Semiacteon texanum n. sp." = Semiactaeon
Acteon pomilius snail
Acteon pomilius punctatus
"Semiacteon texanum n. sp." = Semiactaeon snail
 Heterostropha - Ringiculidae
Ringicula cf. trapaquara
 Heterostropha - Architectonicidae
Architectonica geminicostata n. sp., Architectonica aldrichi n. sp., Architectonica reklawensis n. sp., Pseudomalaxis reklawensis n. sp.
Architectonica aldrichi n. sp. sundial
Architectonica aldrichi caterva
 Heterostropha - Pyramidellidae
Odostomia ova n. sp., Odostomia spp., Pyramidella tundrae n. sp., Pyramidella filamentosa n. sp., Pyramidella perexilis, Pyramidella pirum n. sp., Turbonilla meta n. sp.
Odostomia ova n. sp. snail
Odostomia spp. Fleming 1817 snail
Pyramidella tundrae n. sp. snail
also Pyramidella tundrae zigguratum rare category
Pyramidella pirum n. sp. snail
Turbonilla meta n. sp. snail
 Trochoidea - Skeneidae
Tubiola gracilis n. sp., Solariorbis conicus n. sp., Solariorbis discoides n. sp.
Tubiola gracilis n. sp. snail
Solariorbis conicus n. sp. snail
Solariorbis discoides n. sp. snail
Bivalvia
 Nuculanida - Nuculanidae
Litorhadia undulata n. sp., Litorhadia valdefragilis n. sp., Nuculana demissa n. sp., Nuculana turgeo n. sp., Orthoyoldia psammotaea
Litorhadia undulata n. sp. pointed nut clam
Litorhadia valdefragilis n. sp. pointed nut clam
Nuculana demissa n. sp. pointed nut clam
Nuculana turgeo n. sp. pointed nut clam
Orthoyoldia psammotaea Dall 1898 pointed nut clam
Orthoyoldia psammotaea vivianensis
 Nuculida - Nuculidae
Nucula cochlear n. sp.
Nucula cochlear n. sp. nut clam
 Carditida - Carditidae
Venericor densata n. sp., "Claibornicardia milamensis n. sp." = Glyptoactis (Claibornicardia)
Venericor densata n. sp. Conrad 1845 clam
Venericor densata reklawensis
"Claibornicardia milamensis n. sp." = Glyptoactis (Claibornicardia) clam
 Pholadomyida - Pholadomyidae
Pholadomya cf. leonensis
 Poromyida - Verticordiidae
Verticordia cf. satex
 Poromyida - Cuspidariidae
? Cardiomya sp., ? Cardiomya fredsmithi n. sp.
? Cardiomya sp. Adams 1864 clam
 Thraciida - Periplomatidae
Cochlodesma ovalis n. sp.
Cochlodesma ovalis n. sp. clam
 Cardiida - Kelliellidae
Alveinus cf. minutus
Alveinus cf. minutus Conrad 1865 clam
 Cardiida - Veneridae
Pitar sp., Pitar turneri n. sp.
Pitar sp. Römer 1857 venus clam
Pitar turneri n. sp. venus clam
 Cardiida - Chamidae
Chama taylorensis n. sp.
Chama taylorensis n. sp. jewel box
 Cardiida -
Tenuimactra hodgkinsoni n. gen. n. sp.
Tenuimactra hodgkinsoni n. gen. n. sp. clam
 Pholadida - Corbulidae
"Notocorbula marquezensis n. sp." = Corbula (Notocorbula)
"Notocorbula marquezensis n. sp." = Corbula (Notocorbula) clam
 Hiatellida - Hiatellidae
Panopea sp.
Panopea sp. Menard 1807 clam
 Lucinida - Lucinidae
Anodontia sp.
Anodontia sp. Link 1807 clam
 Mytilida - Crenellidae
Gregariella ridgei n. sp.
Gregariella ridgei n. sp. clam
 Mytilida - Mytilidae
Mytilus sp.
Mytilus sp. Linnaeus 1758 mussel
 Ostreida - Gryphaeidae
Hyotissa offemanae n. sp.
Hyotissa offemanae n. sp. oyster
 Ostreida - Pteriidae
Pteria sp.
Pteria sp. Scopoli 1777 pearl oyster
 Pectinida - Plicatulidae
Plicatula pustula n. sp.
Plicatula pustula n. sp. scallop
 Pectinida - Pectinoidae
Amusium zinguli n. sp.
Amusium zinguli n. sp. scallop
 Arcida - Arcidae
Bathyarca claibornica n. sp., Pachecoa concentrica n. sp., Barbatia reklawensis n. sp., Barbatia salebrosus n. sp.
Barbatia salebrosus n. sp. clam
Scaphopoda
 Dentaliida - Fustiariidae
Fustiaria aciculata n. sp.
Fustiaria aciculata n. sp. tusk shell
 Dentaliida - Dentaliidae
Dentalium palmerae n. sp.
Dentalium palmerae n. sp. tusk shell
 Gadilida - Gadilidae
Cadulus aff. subcoarcuatus, Cadulus bisissura n. sp.
Cadulus bisissura n. sp. tusk shell
Latrius
  -
Latrius traceyi n. sp.