Pomerado Conglomerate

{{Infobox rockunit

| name = Pomerado Conglomerate Formation

| image =

| caption =

| type = Geologic formation

| period = Eocene

| age = Late Eocene

| prilithology = conglomerate

| otherlithology =

| namedfor = Pomerado Road

| namedby =

| region = San Diego County, California

| country = {{Flag|United States}}

| coordinates =

| unitof =

| subunits =

| underlies =

| overlies =Mission Valley Formation

| thickness ={{convert|0|-|55|m|ft}}

| extent =

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The Pomerado Conglomerate Formation is a geologic formation in southwestern San Diego County, California.{{cite book |last=Kennedy |first=Michael P. |date=1975 |title=Geology of the San Diego metropolitan area, California |url=https://archive.org/details/geologyofsandieg00kennrich |publisher=California Division of Mines and Geology |page=}}[http://www.geiconsultants.com/stuff/contentmgr/files/0/3aaf5188d802ff649166ba80c318e433/download/geologic_formations_of_western_san_diego.pdf Geiconsultants.com: Geologic Formations of Western San Diego County]{{dead link|date=March 2018 |bot=InternetArchiveBot |fix-attempted=yes }}, by Jeffrey D. Brown, R.G., C.E.G. − circa 1996.

It was named for exposures located along Pomerado Road, at the divide between Carroll Canyon and Poway Valley.

Geology

The Pomerado Conglomerate is of the Late Eocene Epoch, and is a massive cobble conglomerate. It is lithologically identical to the local Stadium Conglomerate.

It overlies the sandstone Mission Valley Formation. It is the uppermost formation of the Poway Group, and has a maximum thickness of {{convert|55|m|ft}}.

Fossil content

The Pomerado Conglomerate preserves fossils dating back to the Late Eocene Epoch of the Paleogene period, during the Cenozoic Era.{{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021}}

=Mammals=

==Ferae==

colspan="6" align="center" \| Ferae reported from the Pomerado Conglomerate
class="wikitable" align="center"
Genus	Species	Presence !Material	Notes	Images
Carnivoraformes undet. Genus B \| \|SDSNH locality 3757, Scripps Ranch North Site 57, Miramar Sandstone Member.{{Cite journal \|last=Tomiya \|first=Susumu \|date=2013-05-20 \|title=New carnivoraforms (Mammalia) from the middle Eocene of California, USA, and comments on the taxonomic status of 'Miacis' gracilis \|url=https://palaeo-electronica.org/content/2013/435-eocene-carnivoraforms \|journal=Palaeontologia Electronica \|language=English \|volume=16 \|issue=2 \|pages=1–14 \|doi=10.26879/364 \|issn=1094-8074\|doi-access=free }} \|SDSNH 56335, cranium with right and left P4-M2. \| \|
style="background:#f3e9f3;" \|Hyaenodon \|style="background:#fbdddb;" \|cf. H. sp. \|style="background:#fbdddb;" \|Upper Member.{{Cite journal \|last1=Poust \|first1=Ashley W. \|last2=Barrett \|first2=Paul Z. \|last3=Tomiya \|first3=Susumu \|title=An early nimravid from California and the rise of hypercarnivorous mammals after the middle Eocene climatic optimum \|journal=Biology Letters \|year=2022 \|volume=18 \|issue=10 \|pages=20220291 \|doi=10.1098/rsbl.2022.0291\|pmc=9554728 \|hdl=2433/276689 \|s2cid=252818430 \|hdl-access=free }} \|style="background:#fbdddb;" \|"SDSNH 60554, right maxillary fragment with P3–P4". \|style="background:#fbdddb;" \|Specimen reidentified as the nimravid Pangurban. \|style="background:#fbdddb;" \|
Pangurban \|P. egiae \| Upper Member. \|"SDSNH 60554, right maxillary fragment with P3–P4". \| A nimravid, originally reported as cf. Hyaenodon sp. \|

==Rodents==

colspan="6" align="center" \| Rodents reported from the Pomerado Conglomerate
class="wikitable" align="center"
Genus	Species	Presence !Material	Notes	Images
Nonomyinae \|Indeterminate \| \|Isolated m1 (SDSNH 72232).{{Cite journal \|last=Walsh \|first=Stephen L. \|date=September 2010 \|title=New myomorph rodents from the Eocene of Southern California \|url=https://www.tandfonline.com/doi/abs/10.1080/02724634.2010.501433?cookieSet=1 \|journal=Journal of Vertebrate Paleontology \|volume=30 \|issue=5 \|pages=1610–1621\|doi=10.1080/02724634.2010.501433 \|bibcode=2010JVPal..30.1610W \|s2cid=129569996 }} \|"An unnamed new taxon of nonomyine morphologically intermediate between Nonomys and Diplolophus." \|
Nonomys \|N. gutzleri \| \|Isolated teeth. \| A myomorph. \|

Pomerado Conglomerate

Geology

Fossil content

=Mammals=

==Ferae==

==Rodents==

See also

References

Further reading